fix VC++ warning in debug build after latest fix to warning in release

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33983 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/main.cpp

@@ -219,11 +219,11 @@ int wxEntry(int& argc, wxChar **argv)
     {
         wxFatalExit();
 
-#ifndef __VISUALC__
+#if !defined(__VISUALC__) || defined(__WXDEBUG__)
         // this code is unreachable but put it here to suppress warnings in some compilers
         // and disable for others to supress warnings too
         return -1;
-#endif // !__VISUALC__
+#endif // !__VISUALC__ in release build
     }
 }