Index: src/libchcore/TOverlappedDataBuffer.cpp
===================================================================
diff -u -N -rc6148b3c853fcd809375d48414b7f13dd4d10d7e -r8068e0c351055554340ac9755d1bc846893bf2b8
--- src/libchcore/TOverlappedDataBuffer.cpp	(.../TOverlappedDataBuffer.cpp)	(revision c6148b3c853fcd809375d48414b7f13dd4d10d7e)
+++ src/libchcore/TOverlappedDataBuffer.cpp	(.../TOverlappedDataBuffer.cpp)	(revision 8068e0c351055554340ac9755d1bc846893bf2b8)
@@ -76,7 +76,7 @@
 		InternalHigh = 0;
 		Offset = 0;
 		OffsetHigh = 0;
-		hEvent = NULL;
+		hEvent = nullptr;
 
 		// create buffer
 		ReinitializeBuffer(stBufferSize);
@@ -93,7 +93,7 @@
 		{
 			ReleaseBuffer();
 
-			m_pBuffer = VirtualAlloc(NULL, stNewBufferSize, MEM_COMMIT, PAGE_READWRITE);
+			m_pBuffer = VirtualAlloc(nullptr, stNewBufferSize, MEM_COMMIT, PAGE_READWRITE);
 			if (!m_pBuffer)
 				throw TCoreException(eErr_CannotAllocateMemory, L"VirtualAlloc failed", LOCATION);
 			m_stBufferSize = stNewBufferSize;