[metacity] window: fix build warnings

[Alberts Muktupāvels <muktupavels src gnome org>]

commit dca8b717c75951ea46b3ac3de127240217bbc6c8
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Mar 12 21:24:38 2017 +0200

    window: fix build warnings

 src/core/window.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/src/core/window.c b/src/core/window.c
index 787fae0..fa968ee 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -5850,6 +5850,15 @@ should_propagate_focus_appearance (MetaWindow *window)
     case META_WINDOW_OVERRIDE_OTHER:
       return TRUE;
 
+    case META_WINDOW_NORMAL:
+    case META_WINDOW_DESKTOP:
+    case META_WINDOW_DOCK:
+    case META_WINDOW_DIALOG:
+    case META_WINDOW_MODAL_DIALOG:
+    case META_WINDOW_TOOLBAR:
+    case META_WINDOW_MENU:
+    case META_WINDOW_UTILITY:
+    case META_WINDOW_SPLASHSCREEN:
     default:
       break;
     }