[mutter] keybindings: Restore inhibit shortcut for overlay key

[Florian Müllner <fmuellner src gnome org>]

commit 29ea5306ebdc4da198397d63d16ee9a1f0ae724a
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Thu Aug 22 16:14:21 2019 +0300

    keybindings: Restore inhibit shortcut for overlay key
    
    After the introduction of locate-pointer (commit 851b7d063 -
     “keybindings: Trigger locate-pointer on key modifier”), inhibiting
    shortcuts would no longer forward the overlay key to the client.
    
    Restore the code that was inadvertently removed so that inhibiting
    shortcuts works on the overlay key again.
    
    Fixes: https://gitlab.gnome.org/GNOME/mutter/issues/734

 src/core/keybindings.c | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/src/core/keybindings.c b/src/core/keybindings.c
index d2599adf4..8e9016484 100644
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -2130,6 +2130,15 @@ process_overlay_key (MetaDisplay     *display,
 {
   MetaKeyBindingManager *keys = &display->key_binding_manager;
 
+  if (display->focus_window && !keys->overlay_key_only_pressed)
+    {
+      ClutterInputDevice *source;
+
+      source = clutter_event_get_source_device ((ClutterEvent *) event);
+      if (meta_window_shortcuts_inhibited (display->focus_window, source))
+        return FALSE;
+    }
+
   return process_special_modifier_key (display,
                                        event,
                                        window,