Minor tweaks to "Memory override" pull request

Author: ocornut

Diff for: imconfig.h

@@ -5,16 +5,9 @@
 #pragma once
 
 //---- Define your own malloc/free/realloc functions if you want to override internal memory allocations for ImGui
-/*
- #define IM_MALLOC(_SIZE) MyMalloc(_SIZE)
- #define IM_FREE(_PTR) MyFree(_PTR)
- #define IM_REALLOC(_PTR, _SIZE) MyRealloc(_PTR, _SIZE)
-
- #include <stdlib.h>    // size_t
- void* MyMalloc(size_t size);
- void MyFree(void *ptr);
- void* MyRealloc(void *ptr, size_t size);
-*/
+//#define IM_MALLOC(_SIZE)			MyMalloc(_SIZE)			// void* MyMalloc(size_t size);
+//#define IM_FREE(_PTR)				MyFree(_PTR)			// void MyFree(void *ptr);
+//#define IM_REALLOC(_PTR, _SIZE)	MyRealloc(_PTR, _SIZE)	// void* MyRealloc(void *ptr, size_t size);
 
 //---- Define your own ImVector<> type if you don't want to use the provided implementation defined in imgui.h
 //#include <vector>

Diff for: imgui.cpp

@@ -194,7 +194,6 @@
 #pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
 #endif
 
-
 //-------------------------------------------------------------------------
 // Forward Declarations
 //-------------------------------------------------------------------------
@@ -666,7 +665,7 @@ struct ImGuiState
     // Logging
     bool                    LogEnabled;
     FILE*                   LogFile;
-    ImGuiTextBuffer*        LogClipboard;
+    ImGuiTextBuffer*        LogClipboard;						// pointer so our GImGui static constructor doesn't call heap allocators.
     int                     LogAutoExpandMaxDepth;
 
     ImGuiState()

Diff for: imgui.h

@@ -17,7 +17,7 @@ struct ImGuiWindow;
 #include "imconfig.h"
 #include <float.h>          // FLT_MAX
 #include <stdarg.h>         // va_list
-#include <stdlib.h>         // NULL
+#include <stdlib.h>         // NULL, malloc
 
 #ifndef IM_MALLOC
 #define IM_MALLOC(_SIZE) malloc((_SIZE))
@@ -70,7 +70,6 @@ struct ImVec4
 // std::vector<> like class to avoid dragging dependencies (also: windows implementation of STL with debug enabled is absurdly slow, so let's bypass it so our code runs fast in debug). 
 // this implementation does NOT call c++ constructors! we don't need them! also only provide the minimum functionalities we need.
 #ifndef ImVector
-
 template<typename T>
 class ImVector
 {