win32: tolerate extra error flags on Vista

This should not adversely affect LibVLC: more errors cases will lead to
error code returns instead of abnormal termination. It is not strictly
semantically correct though (update to Win7 or above if you care).

src/win32/plugin.c

@@ -57,7 +57,8 @@ static BOOL WINAPI SetThreadErrorModeFallback(DWORD mode, DWORD *oldmode)
     if (GetErrorModeReal != NULL)
         curmode = GetErrorModeReal();
 # endif
-    if ((mode & SEM_FAILCRITICALERRORS) != (curmode & SEM_FAILCRITICALERRORS))
+    /* Extra flags should be OK. Missing flags are NOT OK. */
+    if ((mode & curmode) != mode)
         return FALSE;
     if (oldmode != NULL)
         *oldmode = curmode;