scripts: don't throw away stderr when checking out git submodules

The stderr from git is important if git fails to checkout modules
due to network problems, or other unexpected errors.
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 20171020130748.22983-1-berrange@redhat.com
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

scripts/git-submodule.sh

@@ -32,7 +32,7 @@ status)
     exit $?
     ;;
 update)
-    git submodule update --init $modules 1>/dev/null 2>&1
+    git submodule update --init $modules 1>/dev/null
     git submodule status $modules > "${substat}"
     ;;
 esac