[metacity] Fix uninitialized variables

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 18cfb5ffd5e2fd5fe71feffa41bb47dc3ef9a0f0
Author: Vincent Untz <vuntz gnome org>
Date:   Mon May 24 15:55:55 2010 +0200

    Fix uninitialized variables

 src/core/window.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/core/window.c b/src/core/window.c
index 2c829e9..74994bd 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -4085,6 +4085,9 @@ meta_window_begin_wireframe (MetaWindow *window)
   MetaRectangle new_xor;
   int display_width, display_height;
 
+  display_width = 0;
+  display_height = 0;
+
   meta_window_get_client_root_coords (window,
                                       &window->display->grab_wireframe_rect);
 
@@ -4111,6 +4114,9 @@ meta_window_update_wireframe (MetaWindow *window,
   MetaRectangle new_xor;
   int display_width, display_height;
 
+  display_width = 0;
+  display_height = 0;
+
   window->display->grab_wireframe_rect.x = x;
   window->display->grab_wireframe_rect.y = y;
   window->display->grab_wireframe_rect.width = width;