[mutter] tests/test-client: Set padding to 0 too

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

commit b15506322708e9126de12580262727d12051e000
Author: Jonas Ådahl <jadahl gmail com>
Date:   Mon Mar 1 09:15:59 2021 +0100

    tests/test-client: Set padding to 0 too
    
    This makes size dependent stacking tests less flaky.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1751>

 src/tests/test-client.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/tests/test-client.c b/src/tests/test-client.c
index 9c2f17863a..73931375e9 100644
--- a/src/tests/test-client.c
+++ b/src/tests/test-client.c
@@ -912,6 +912,7 @@ main(int argc, char **argv)
     "decoration {"
     "  border-radius: 0 0 0 0;"
     "  border-width: 0;"
+    "  padding: 0 0 0 0;"
     "  box-shadow: 0 0 0 0 rgba(0, 0, 0, 0), 0 0 0 0 rgba(0, 0, 0, 0);"
     "  margin: 0px;"
     "}";