Merge pull request #6093 from endrift/fix-efb-overflow

VideoCommon: Fix overflow trying to access outside of EFB bounds

Source/Core/VideoCommon/MainBase.cpp

@@ -67,7 +67,7 @@ void VideoBackendBase::Video_BeginField(u32 xfbAddr, u32 fbWidth, u32 fbStride,
 
 u32 VideoBackendBase::Video_AccessEFB(EFBAccessType type, u32 x, u32 y, u32 InputData)
 {
-  if (!g_ActiveConfig.bEFBAccessEnable)
+  if (!g_ActiveConfig.bEFBAccessEnable || x >= EFB_WIDTH || y >= EFB_HEIGHT)
   {
     return 0;
   }