Fix a couple of memory leaks

Resolves: #1641254

0002-shaped-texture-Clean-up-texture-regions.patch

@@ -0,0 +1,37 @@
+From 8200995fdbf04b2763d33cd30d7c8174eebc1736 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>
+Date: Sat, 20 Oct 2018 15:47:50 +0200
+Subject: [PATCH 2/2] shaped-texture: Clean up texture regions
+
+We allocated texture regions, but didn't free them when finished,
+causing a leak.
+
+https://gitlab.gnome.org/GNOME/gnome-shell/issues/653
+---
+ src/compositor/meta-shaped-texture.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/compositor/meta-shaped-texture.c b/src/compositor/meta-shaped-texture.c
+index 5328a919ea..cd151a28ed 100644
+--- a/src/compositor/meta-shaped-texture.c
++++ b/src/compositor/meta-shaped-texture.c
+@@ -516,6 +516,7 @@ meta_shaped_texture_paint (ClutterActor *actor)
+     }
+   else
+     {
++      opaque_tex_region = NULL;
+       use_opaque_region = FALSE;
+     }
+ 
+@@ -659,6 +660,8 @@ meta_shaped_texture_paint (ClutterActor *actor)
+         }
+     }
+ 
++  g_clear_pointer (&clip_tex_region, cairo_region_destroy);
++  g_clear_pointer (&opaque_tex_region, cairo_region_destroy);
+   g_clear_pointer (&blended_tex_region, cairo_region_destroy);
+ }
+ 
+-- 
+2.19.1
+