Index: src/ch/FeedbackNotEnoughSpaceDlg.cpp
===================================================================
diff -u -N -r3c248d4f6d0fdb1e487cc868b2f0b219eec37ef4 -ra6b040ed1b328ac7ad30882b07b7ca41e812bbb9
--- src/ch/FeedbackNotEnoughSpaceDlg.cpp	(.../FeedbackNotEnoughSpaceDlg.cpp)	(revision 3c248d4f6d0fdb1e487cc868b2f0b219eec37ef4)
+++ src/ch/FeedbackNotEnoughSpaceDlg.cpp	(.../FeedbackNotEnoughSpaceDlg.cpp)	(revision a6b040ed1b328ac7ad30882b07b7ca41e812bbb9)
@@ -143,10 +143,10 @@
 	if (nIDEvent == 1601)
 	{
 		// update free space
-		unsigned long long ullFree = 0, ullTotal = 0;
 		CWnd *pWnd=GetDlgItem(IDC_AVAILABLE_STATIC);
 		if (pWnd)
 		{
+			unsigned long long ullFree = 0, ullTotal = 0;
 			try
 			{
 				m_fsLocal.GetDynamicFreeSpace(chcore::PathFromString(m_strDisk), ullFree, ullTotal);
Index: src/ch/FolderDialog.cpp
===================================================================
diff -u -N -r3c248d4f6d0fdb1e487cc868b2f0b219eec37ef4 -ra6b040ed1b328ac7ad30882b07b7ca41e812bbb9
--- src/ch/FolderDialog.cpp	(.../FolderDialog.cpp)	(revision 3c248d4f6d0fdb1e487cc868b2f0b219eec37ef4)
+++ src/ch/FolderDialog.cpp	(.../FolderDialog.cpp)	(revision a6b040ed1b328ac7ad30882b07b7ca41e812bbb9)
@@ -662,10 +662,10 @@
 		if (!bSkipFreeSpace)
 		{
 			// get disk free space
-			unsigned long long ullFree = 0, ullTotal = 0;
-
 			try
 			{
+				unsigned long long ullFree = 0, ullTotal = 0;
+
 				m_fsLocal.GetDynamicFreeSpace(chcore::PathFromString(strPath), ullFree, ullTotal);
 				m_strTip += GetResManager().LoadString(IDS_BDFREESPACE_STRING) + GetSizeString(ullFree, false) + _T("\n");
 				m_strTip += GetResManager().LoadString(IDS_BDCAPACITY_STRING) + GetSizeString(ullTotal, false) + _T("\n");
@@ -706,9 +706,10 @@
 	m_strTip=sc.m_strName+_T("\r\n")+CString(GetResManager().LoadString(IDS_BDPATH2_STRING))+sc.m_strPath;
 
 	// get disk free space
-	unsigned long long ullFree = 0, ullTotal = 0;
 	try
 	{
+		unsigned long long ullFree = 0, ullTotal = 0;
+
 		m_fsLocal.GetDynamicFreeSpace(chcore::PathFromString(sc.m_strPath), ullFree, ullTotal);
 		m_strTip += CString(_T("\r\n")) + GetResManager().LoadString(IDS_BDFREESPACE_STRING) + GetSizeString(ullFree, false) + _T("\n");
 		m_strTip += GetResManager().LoadString(IDS_BDCAPACITY_STRING) + GetSizeString(ullTotal, false);
Index: src/ch/TShellExtensionConfig.h
===================================================================
diff -u -N -r306fbe693c70290af9de9a5779084a697de22d75 -ra6b040ed1b328ac7ad30882b07b7ca41e812bbb9
--- src/ch/TShellExtensionConfig.h	(.../TShellExtensionConfig.h)	(revision 306fbe693c70290af9de9a5779084a697de22d75)
+++ src/ch/TShellExtensionConfig.h	(.../TShellExtensionConfig.h)	(revision a6b040ed1b328ac7ad30882b07b7ca41e812bbb9)
@@ -28,7 +28,7 @@
 class TShellExtensionConfig
 {
 public:
-	TShellExtensionConfig(const logger::TLogFileDataPtr& spLogData);
+	explicit TShellExtensionConfig(const logger::TLogFileDataPtr& spLogData);
 
 	void PrepareConfig();
 
Index: src/ch/TWindowMessageFilterHelper.cpp
===================================================================
diff -u -N -r09cedb80782a75d4b4896a1f3d2dd535688bf840 -ra6b040ed1b328ac7ad30882b07b7ca41e812bbb9
--- src/ch/TWindowMessageFilterHelper.cpp	(.../TWindowMessageFilterHelper.cpp)	(revision 09cedb80782a75d4b4896a1f3d2dd535688bf840)
+++ src/ch/TWindowMessageFilterHelper.cpp	(.../TWindowMessageFilterHelper.cpp)	(revision a6b040ed1b328ac7ad30882b07b7ca41e812bbb9)
@@ -42,5 +42,5 @@
 
 	FreeLibrary(hMod);
 
-	return bResult != false;
+	return bResult != FALSE;
 }
Index: src/chext/TContextMenuHandler.cpp
===================================================================
diff -u -N -r3c248d4f6d0fdb1e487cc868b2f0b219eec37ef4 -ra6b040ed1b328ac7ad30882b07b7ca41e812bbb9
--- src/chext/TContextMenuHandler.cpp	(.../TContextMenuHandler.cpp)	(revision 3c248d4f6d0fdb1e487cc868b2f0b219eec37ef4)
+++ src/chext/TContextMenuHandler.cpp	(.../TContextMenuHandler.cpp)	(revision a6b040ed1b328ac7ad30882b07b7ca41e812bbb9)
@@ -115,9 +115,10 @@
 
 		if(bShowFreeSpace && spMenuItem->SpecifiesDestinationPath())
 		{
-			unsigned long long ullSize = 0, ullTotal = 0;
 			try
 			{
+				unsigned long long ullSize = 0, ullTotal = 0;
+
 				m_fsLocal.GetDynamicFreeSpace(spMenuItem->GetDestinationPathInfo().GetDefaultDestinationPath(), ullSize, ullTotal);
 
 				wstrItemName += std::wstring(L" (") + spFormatter->GetSizeString(ullSize) + L")";
Index: src/libchcore/TIpcMutex.cpp
===================================================================
diff -u -N -r306fbe693c70290af9de9a5779084a697de22d75 -ra6b040ed1b328ac7ad30882b07b7ca41e812bbb9
--- src/libchcore/TIpcMutex.cpp	(.../TIpcMutex.cpp)	(revision 306fbe693c70290af9de9a5779084a697de22d75)
+++ src/libchcore/TIpcMutex.cpp	(.../TIpcMutex.cpp)	(revision a6b040ed1b328ac7ad30882b07b7ca41e812bbb9)
@@ -35,15 +35,13 @@
 
 	TIpcMutex::~TIpcMutex()
 	{
-		if(m_bLocked)
-			Unlock();
-
-		if(m_hMutex)
-			CloseHandle(m_hMutex);
+		Close();
 	}
 
 	void TIpcMutex::CreateMutex(const wchar_t* pszName)
 	{
+		Close();
+
 		m_hMutex = ::CreateMutex(nullptr, FALSE, pszName);
 		if(!m_hMutex)
 			throw TCoreWin32Exception(eErr_CannotCreateMutex, GetLastError(), L"Cannot create mutex", LOCATION);
@@ -76,4 +74,13 @@
 		ReleaseMutex(m_hMutex);
 		m_bLocked = false;
 	}
+
+	void TIpcMutex::Close()
+	{
+		if (m_bLocked)
+			Unlock();
+
+		if (m_hMutex)
+			CloseHandle(m_hMutex);
+	}
 }
Index: src/libchcore/TIpcMutex.h
===================================================================
diff -u -N -r306fbe693c70290af9de9a5779084a697de22d75 -ra6b040ed1b328ac7ad30882b07b7ca41e812bbb9
--- src/libchcore/TIpcMutex.h	(.../TIpcMutex.h)	(revision 306fbe693c70290af9de9a5779084a697de22d75)
+++ src/libchcore/TIpcMutex.h	(.../TIpcMutex.h)	(revision a6b040ed1b328ac7ad30882b07b7ca41e812bbb9)
@@ -27,7 +27,7 @@
 	{
 	public:
 		TIpcMutex();
-		TIpcMutex(const wchar_t* pszName);
+		explicit TIpcMutex(const wchar_t* pszName);
 		~TIpcMutex();
 
 		void CreateMutex(const wchar_t* pszName);
@@ -36,6 +36,9 @@
 		void Unlock();
 
 	private:
+		void Close();
+
+	private:
 		HANDLE m_hMutex = nullptr;
 		bool m_bLocked = false;
 	};