[metacity] display: add missing break in switch

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 69a26e83289a152ae4b0827c29b9454cc0fc67c2
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Mon Jun 19 22:51:05 2017 +0300

    display: add missing break in switch

 src/core/display.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/core/display.c b/src/core/display.c
index d7f2975..ca1002b 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -3719,10 +3719,11 @@ meta_display_begin_grab_op (MetaDisplay *display,
                                     META_TAB_LIST_GROUP,
                                     META_TAB_SHOW_ICON);
       break;
-     case META_GRAB_OP_KEYBOARD_ESCAPING_GROUP:
+    case META_GRAB_OP_KEYBOARD_ESCAPING_GROUP:
       meta_screen_ensure_tab_popup (screen,
                                     META_TAB_LIST_GROUP,
                                     META_TAB_SHOW_INSTANTLY);
+      break;
 
     case META_GRAB_OP_KEYBOARD_WORKSPACE_SWITCHING:
       meta_screen_ensure_workspace_popup (screen);