[mutter/gtk3-ci: 13/18] window: Set fall-back tile monitor if not set

[Jonas Ådahl <jadahl src gnome org>]

commit c413dd90785e920916993f06f1baac85b30d060e
Author: Jonas Ådahl <jadahl gmail com>
Date:   Thu Apr 2 19:05:21 2020 +0200

    window: Set fall-back tile monitor if not set
    
    When tiling, we want to set the tile monitor. To not have to do this
    from the call site, make meta_window_tile() fall back to the current
    monitor if nothing set it prior to the call.
    
    This will make it more convenient for test cases that what to test
    tiling.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1171

 src/core/window.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/core/window.c b/src/core/window.c
index b66ae67f3..f4d7b02ff 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -3180,6 +3180,10 @@ meta_window_tile (MetaWindow   *window,
       window->tile_monitor_number = -1;
       return;
     }
+  else
+    {
+      window->tile_monitor_number = window->monitor->number;
+    }
 
   if (window->tile_mode == META_TILE_MAXIMIZED)
     directions = META_MAXIMIZE_BOTH;