SPEC-2513 Fixes to enable w4701 (#1105)

* Some fixes

* more fixes

* fixes for debug

Code/CryEngine/CrySystem/DebugCallStack.cpp

@@ -561,7 +561,7 @@ void DebugCallStack::LogExceptionInfo(EXCEPTION_POINTERS* pex)
 
     if (pex)
     {
-        MINIDUMP_TYPE mdumpValue;
+        MINIDUMP_TYPE mdumpValue = MiniDumpNormal;
         bool bDump = true;
         switch (g_cvars.sys_dump_type)
         {

Code/CryEngine/CrySystem/System.cpp

@@ -66,7 +66,7 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
     }
     if (pSystem && !pSystem->IsQuitting())
     {
-        LRESULT result;
+        LRESULT result = 0;
         bool bAny = false;
         for (std::vector<IWindowMessageHandler*>::const_iterator it = pSystem->m_windowMessageHandlers.begin(); it != pSystem->m_windowMessageHandlers.end(); ++it)
         {

Code/CryEngine/CrySystem/SystemInit.cpp

@@ -634,7 +634,7 @@ ICVar* CSystem::attachVariable (const char* szVarName, int* pContainer, const ch
     IConsole* pConsole = GetIConsole();
 
     ICVar* pOldVar = pConsole->GetCVar (szVarName);
-    int nDefault;
+    int nDefault = 0;
     if (pOldVar)
     {
         nDefault = pOldVar->GetIVal();

Code/Framework/AzCore/Tests/Jobs.cpp

@@ -395,7 +395,8 @@ namespace UnitTest
             }
             else
             {
-                int result1, result2;
+                int result1 = 0;
+                int result2 = 0;
                 Job* job1 = aznew FibonacciJob2(m_n - 1, &result1, m_context);
                 Job* job2 = aznew FibonacciJob2(m_n - 2, &result2, m_context);
                 StartAsChild(job1);

Code/Framework/AzFramework/Platform/Windows/AzFramework/Windowing/NativeWindow_Windows.cpp

@@ -353,6 +353,7 @@ namespace AzFramework
 
         // Get the dimensions of the display device on which the window is currently displayed.
         MONITORINFO monitorInfo;
+        memset(&monitorInfo, 0, sizeof(MONITORINFO)); // C4701 potentially uninitialized local variable 'monitorInfo' used
         monitorInfo.cbSize = sizeof(MONITORINFO);
         const BOOL success = monitor ? GetMonitorInfo(monitor, &monitorInfo) : FALSE;
         if (!success)

Code/Sandbox/Editor/LogFile.cpp

@@ -553,7 +553,7 @@ void CLogFile::OnWriteToConsole(const char* sText, bool bNewLine)
 
             // remember selection and the top row
             int len = m_hWndEditBox->document()->toPlainText().length();
-            int top;
+            int top = 0;
             int from = m_hWndEditBox->textCursor().selectionStart();
             int to = from + m_hWndEditBox->textCursor().selectionEnd();
             bool keepPos = false;

Code/Sandbox/Editor/Util/AffineParts.cpp

@@ -157,7 +157,7 @@ static  Quatern Qt_FromMatrix(HMatrix mat)
      * |w| is greater than 1/2, which is as small as a largest component can be.
      * Otherwise, the largest diagonal entry corresponds to the largest of |x|,
      * |y|, or |z|, one of which must be larger than |w|, and at least 1/2. */
-    Quatern qu;
+    Quatern qu = { 0.0f, 0.0f, 0.0f, 1.0f };
     double tr, s;
 
     tr = mat[X][X] + mat[Y][Y] + mat[Z][Z];
@@ -531,7 +531,7 @@ Quatern snuggle(Quatern q, HVect* k)
 #define swap(a, i, j) {a[3] = a[i]; a[i] = a[j]; a[j] = a[3]; }
 #define cycle(a, p)  if (p) {a[3] = a[0]; a[0] = a[1]; a[1] = a[2]; a[2] = a[3]; } \
     else   {a[3] = a[2]; a[2] = a[1]; a[1] = a[0]; a[0] = a[3]; }
-    Quatern p;
+    Quatern p = { 0.0f, 0.0f, 0.0f, 1.0f };
     float ka[4];
     int i, turn = -1;
     ka[X] = k->x;

Code/Sandbox/Editor/Util/FileUtil.cpp

@@ -2239,7 +2239,8 @@ uint32 CFileUtil::GetAttributes(const char* filename, bool bUseSourceControl /*=
 bool CFileUtil::CompareFiles(const QString& strFilePath1, const QString& strFilePath2)
 {
     // Get the size of both files.  If either fails we say they are different (most likely one doesn't exist)
-    uint64 size1, size2;
+    uint64 size1 = 0;
+    uint64 size2 = 0;
     if (!GetDiskFileSize(strFilePath1.toUtf8().data(), size1) || !GetDiskFileSize(strFilePath2.toUtf8().data(), size2))
     {
         return false;

Code/Sandbox/Editor/Util/ImageBT.cpp

@@ -116,6 +116,7 @@ bool CImageBT::Load(const QString& fileName, CFloatImage& image)
 
     // Get the BT header data
     BtHeader header;
+    memset(&header, 0, sizeof(BtHeader)); // C4701 potentially uninitialized local variable 'header' used
     bool validData = true;
     validData = validData && (fread(&header, sizeof(BtHeader), 1, file) != 0);
 

Code/Sandbox/Editor/Util/StringHelpers.cpp

@@ -419,7 +419,7 @@ static inline bool MatchesWildcardsIgnoreCaseExt_Tpl(const TS& str, const TS& wi
     const typename TS::value_type* savedStrBegin = 0;
     const typename TS::value_type* savedStrEnd = 0;
     const typename TS::value_type* savedWild = 0;
-    size_t savedWildCount;
+    size_t savedWildCount = 0;
 
     const typename TS::value_type* pStr = str.c_str();
     const typename TS::value_type* pWild = wildcards.c_str();