[mutter] clutter: fix memleak in test error path

[Robert Mader <rmader src gnome org>]

commit d0ef660ff6f2fa5fed774bd577285b2a7006c887
Author: Thomas Hindoe Paaboel Andersen <phomes gmail com>
Date:   Fri Apr 10 23:19:28 2020 +0200

    clutter: fix memleak in test error path
    
    If clutter_init fails then we will not free state.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/1195

 src/tests/clutter/interactive/test-cogl-multitexture.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/tests/clutter/interactive/test-cogl-multitexture.c 
b/src/tests/clutter/interactive/test-cogl-multitexture.c
index b2256702b..5d33e40e3 100644
--- a/src/tests/clutter/interactive/test-cogl-multitexture.c
+++ b/src/tests/clutter/interactive/test-cogl-multitexture.c
@@ -112,7 +112,7 @@ test_cogl_multitexture_main (int argc, char *argv[])
   GError            *error = NULL;
   ClutterActor     *stage;
   ClutterColor       stage_color = { 0x61, 0x56, 0x56, 0xff };
-  TestMultiLayerMaterialState *state = g_new0 (TestMultiLayerMaterialState, 1);
+  g_autofree TestMultiLayerMaterialState *state = g_new0 (TestMultiLayerMaterialState, 1);
   gfloat             stage_w, stage_h;
   gchar            **files;
   gfloat             tex_coords[] =