build,win: fix goto exit in vcbuild

PR-URL: #30931
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Michaël Zasso <[email protected]>
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Tobias Nießen <[email protected]>

Author: joaocgreis

vcbuild.bat

@@ -675,6 +675,7 @@ echo   vcbuild.bat no-cctest                : skip building cctest.exe
 goto exit
 
 :exit
+if %errorlevel% neq 0 exit /b %errorlevel%
 exit /b %exit_code%