[mutter] ci/run-tests: Call set -e instead of set +e

[Marge Bot <marge-bot src gnome org>]

commit e52fdad3f4105f69f87679b8934e136e1fe5e731
Author: Jonas Ådahl <jadahl gmail com>
Date:   Sat Feb 13 18:47:54 2021 +0100

    ci/run-tests: Call set -e instead of set +e
    
    We want to fail the script if anything fails, not the other way around.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1698>

 .gitlab-ci/run-tests.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci/run-tests.sh b/.gitlab-ci/run-tests.sh
index 76b67934ff..34c66b9927 100755
--- a/.gitlab-ci/run-tests.sh
+++ b/.gitlab-ci/run-tests.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/bash
 
-set +e
+set -e
 
 dconf update
 glib-compile-schemas $GSETTINGS_SCHEMA_DIR