[mutter] backends: Fix ClutterRect initialisations

[Philip Withnall <pwithnall src gnome org>]

commit 93e450f37c0db6892c2f006f077ed674cec052fb
Author: Philip Withnall <withnall endlessm com>
Date:   Thu Nov 30 12:59:08 2017 +0000

    backends: Fix ClutterRect initialisations
    
    With Clang, these initialisations were warning about missing brackets.
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    
    https://bugzilla.gnome.org/show_bug.cgi?id=791022

 src/backends/meta-cursor-renderer.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/backends/meta-cursor-renderer.c b/src/backends/meta-cursor-renderer.c
index 716378b..27617ef 100644
--- a/src/backends/meta-cursor-renderer.c
+++ b/src/backends/meta-cursor-renderer.c
@@ -70,7 +70,7 @@ queue_redraw (MetaCursorRenderer *renderer,
   MetaBackend *backend = meta_get_backend ();
   ClutterActor *stage = meta_backend_get_stage (backend);
   CoglTexture *texture;
-  ClutterRect rect = { 0 };
+  ClutterRect rect = CLUTTER_RECT_INIT_ZERO;
 
   if (cursor_sprite)
     rect = meta_cursor_renderer_calculate_rect (renderer, cursor_sprite);
@@ -173,7 +173,7 @@ meta_cursor_renderer_calculate_rect (MetaCursorRenderer *renderer,
 
   texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
   if (!texture)
-    return (ClutterRect) { 0 };
+    return (ClutterRect) CLUTTER_RECT_INIT_ZERO;
 
   meta_cursor_sprite_get_hotspot (cursor_sprite, &hot_x, &hot_y);
   texture_scale = meta_cursor_sprite_get_texture_scale (cursor_sprite);