Fix mingw debug build

webshell/tests/viewer/windows/nsdefs.h

@@ -47,7 +47,7 @@
 #endif  
 
 #ifdef _DEBUG
-  #define VERIFY(exp)                 ((exp) ? 0: (GetLastError(), BREAK_TO_DEBUGGER))
+  #define VERIFY(exp)                 if (!(exp)) { GetLastError(); BREAK_TO_DEBUGGER; }
 #else   // !_DEBUG
   #define VERIFY(exp)                 (exp)
 #endif  // !_DEBUG