[metacity] window: fix cursor not on titlebar unmaximizing csd windows

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 7a9610f3df2039f6b801b51bb3a18b6576842de6
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Apr 3 23:48:21 2015 +0300

    window: fix cursor not on titlebar unmaximizing csd windows

 src/core/window.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/src/core/window.c b/src/core/window.c
index 128746d..30b5e3a 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -7131,17 +7131,16 @@ update_move (MetaWindow  *window,
 
       display->grab_initial_window_pos.x =
         x - window->saved_rect.width * prop;
-      display->grab_initial_window_pos.y = y;
 
       if (window->frame)
         {
-          display->grab_initial_window_pos.y += window->frame->child_y / 2;
+          display->grab_initial_window_pos.y = y + window->frame->child_y / 2;
+          display->grab_anchor_root_x = x;
+          display->grab_anchor_root_y = y;
         }
 
       window->saved_rect.x = display->grab_initial_window_pos.x;
       window->saved_rect.y = display->grab_initial_window_pos.y;
-      display->grab_anchor_root_x = x;
-      display->grab_anchor_root_y = y;
 
       meta_window_unmaximize (window,
                               META_MAXIMIZE_HORIZONTAL |