Index: src/chext/ShellExtensionVerifier.cpp
===================================================================
diff -u -rb79aca0d66b1084f230022efe39cc89307482e6d -r8068e0c351055554340ac9755d1bc846893bf2b8
--- src/chext/ShellExtensionVerifier.cpp	(.../ShellExtensionVerifier.cpp)	(revision b79aca0d66b1084f230022efe39cc89307482e6d)
+++ src/chext/ShellExtensionVerifier.cpp	(.../ShellExtensionVerifier.cpp)	(revision 8068e0c351055554340ac9755d1bc846893bf2b8)
@@ -28,15 +28,15 @@
 	if(FAILED(hResult) || hResult == S_FALSE)
 	{
 		BOOST_LOG_SEV(rLogger, debug) << L"Shell extension is disabled.";
-		return NULL;
+		return nullptr;
 	}
 
 	// find CH's window
 	HWND hWnd = ::FindWindow(_T("Copy Handler Wnd Class"), _T("Copy handler"));
 	if(!hWnd)
 	{
 		BOOST_LOG_SEV(rLogger, debug) << L"Cannot find Copy Handler's window.";
-		return NULL;
+		return nullptr;
 	}
 
 	return hWnd;