[mutter] Use the correct frame size during unmaximize

[Owen Taylor <otaylor src gnome org>]

commit 3283018bfbefea0664deac42d4180cbc374c5ab6
Author: Owen W. Taylor <otaylor fishsoup net>
Date:   Thu Dec 5 08:27:28 2013 -0500

    Use the correct frame size during unmaximize
    
    When unmaximizing, we changed bits of window state, then called out
    to code that used the frame extents *before* we cleared old cached
    extents. Clear the cache up-front as soon as we change the window
    state.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=714707

 src/core/window.c |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/src/core/window.c b/src/core/window.c
index cf1701d..b9f4455 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -3900,8 +3900,10 @@ meta_window_unmaximize_internal (MetaWindow        *window,
     {
       MetaRectangle target_rect;
       MetaRectangle work_area;
+      MetaRectangle old_rect;
 
       meta_window_get_work_area_for_monitor (window, window->monitor->number, &work_area);
+      meta_window_get_frame_rect (window, &old_rect);
 
       meta_topic (META_DEBUG_WINDOW_OPS,
                   "Unmaximizing %s%s\n",
@@ -3915,6 +3917,12 @@ meta_window_unmaximize_internal (MetaWindow        *window,
       window->maximized_vertically =
         window->maximized_vertically   && !unmaximize_vertically;
 
+      /* recalc_window_features() will eventually clear the cached frame
+       * extents, but we need the correct frame extents in the code below,
+       * so invalidate the old frame extents manually up front.
+       */
+      meta_window_frame_size_changed (window);
+
       /* Unmaximize to the saved_rect position in the direction(s)
        * being unmaximized.
        */
@@ -3959,9 +3967,7 @@ meta_window_unmaximize_internal (MetaWindow        *window,
 
       if (window->display->compositor)
         {
-          MetaRectangle old_rect, new_rect;
-
-         meta_window_get_frame_rect (window, &old_rect);
+          MetaRectangle new_rect;
 
           meta_window_move_resize_internal (window,
                                             META_IS_MOVE_ACTION | META_IS_RESIZE_ACTION,