win,build: set exit_code on configure failure

Bartlomiej Brzozowski · addaleax · commit 2ee684a7b965 · 2020-03-30T19:18:46.000+02:00
PR-URL: #32205 Fixes: #31573 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
diff --git a/vcbuild.bat b/vcbuild.bat
@@ -722,6 +722,7 @@ goto exit
 :create-msvs-files-failed
 echo Failed to create vc project files.
 del .used_configure_flags
+set exit_code=1
 goto exit
 
 :help
