[mutter] tests/kvm: Forward MUTTER_DEBUG to the virtual machine

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

commit 0dc6d7637172039482ff6a6d453dce7238845cf8
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Jul 27 16:51:40 2022 +0200

    tests/kvm: Forward MUTTER_DEBUG to the virtual machine
    
    This helps debugging the tests running using KVM.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2141>

 src/tests/kvm/virtme-run.sh | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/tests/kvm/virtme-run.sh b/src/tests/kvm/virtme-run.sh
index a109dafe76..755f28007e 100755
--- a/src/tests/kvm/virtme-run.sh
+++ b/src/tests/kvm/virtme-run.sh
@@ -16,6 +16,7 @@ VIRTME_ENV="\
 HOME=$HOME \
 LD_LIBRARY_PATH=$LD_LIBRARY_PATH \
 XDG_DATA_DIRS=$XDG_DATA_DIRS \
+MUTTER_DEBUG=$MUTTER_DEBUG \
 $VM_ENV \
 "