Bug 1504022 - Map GetExceptionCode to a nop to avoid an error r=bobowen

error: '_exception_code' only allowed in __except block or filter expression

--HG--
extra : histedit_source : 4f1cc219b7aca1e1eac1783a71eddbce97f1e214

mozilla-config.h.in

@@ -54,6 +54,10 @@
  */
 #define __try if(true)
 #define __except(x) else
+#ifdef GetExceptionCode
+#undef GetExceptionCode
+#endif
+#define GetExceptionCode() 0
 
 #endif /* __MINGW32__ */
 #endif /* defined(CHROMIUM_SANDBOX_BUILD) && defined(XP_WIN) */