[mutter] wayland: Store key press/release serials on MetaWaylandKeyboard

[Carlos Garnacho <carlosg src gnome org>]

commit dd5a4ecdf93f0bf03819416618ab15430b2b7e56
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Oct 9 16:40:45 2015 +0200

    wayland: Store key press/release serials on MetaWaylandKeyboard
    
    https://bugzilla.gnome.org/show_bug.cgi?id=756296

 src/wayland/meta-wayland-keyboard.c |    5 +++--
 src/wayland/meta-wayland-keyboard.h |    1 +
 2 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/src/wayland/meta-wayland-keyboard.c b/src/wayland/meta-wayland-keyboard.c
index c4836cb..7cc4853 100644
--- a/src/wayland/meta-wayland-keyboard.c
+++ b/src/wayland/meta-wayland-keyboard.c
@@ -251,11 +251,12 @@ notify_key (MetaWaylandKeyboard *keyboard,
     {
       struct wl_client *client = wl_resource_get_client (keyboard->focus_surface->resource);
       struct wl_display *display = wl_client_get_display (client);
-      uint32_t serial = wl_display_next_serial (display);
+
+      keyboard->key_serial = wl_display_next_serial (display);
 
       wl_resource_for_each (resource, l)
         {
-          wl_keyboard_send_key (resource, serial, time, key, state);
+          wl_keyboard_send_key (resource, keyboard->key_serial, time, key, state);
         }
     }
 
diff --git a/src/wayland/meta-wayland-keyboard.h b/src/wayland/meta-wayland-keyboard.h
index ea9db32..aaf431f 100644
--- a/src/wayland/meta-wayland-keyboard.h
+++ b/src/wayland/meta-wayland-keyboard.h
@@ -68,6 +68,7 @@ struct _MetaWaylandKeyboard
   MetaWaylandSurface *focus_surface;
   struct wl_listener focus_surface_listener;
   uint32_t focus_serial;
+  uint32_t key_serial;
 
   MetaWaylandXkbInfo xkb_info;
   enum xkb_state_component mods_changed;