[mutter/wip/carlosg/selection-fixes: 1/8] wayland: Plug MetaSelectionSourceWayland leaks

[Carlos Garnacho <carlosg src gnome org>]

commit 4f05198a5bd05a101b052ae78e9c25c2caf8573a
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Oct 11 13:25:35 2019 +0200

    wayland: Plug MetaSelectionSourceWayland leaks
    
    There was a dangling ref left on all of them, oops.
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/848

 src/wayland/meta-wayland-data-device.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/wayland/meta-wayland-data-device.c b/src/wayland/meta-wayland-data-device.c
index 2ca77e8ea..e063a9a0c 100644
--- a/src/wayland/meta-wayland-data-device.c
+++ b/src/wayland/meta-wayland-data-device.c
@@ -1309,6 +1309,7 @@ data_device_start_drag (struct wl_client *client,
   g_list_free_full (mimetypes, g_free);
   set_selection_source (data_device, META_SELECTION_DND,
                         selection_source);
+  g_object_unref (selection_source);
 
   meta_wayland_pointer_set_focus (seat->pointer, NULL);
   meta_wayland_data_device_start_drag (data_device, client,
@@ -1694,6 +1695,7 @@ meta_wayland_data_device_set_selection (MetaWaylandDataDevice *data_device,
 
       set_selection_source (data_device, META_SELECTION_CLIPBOARD,
                             selection_source);
+      g_object_unref (selection_source);
     }
   else
     {
@@ -1831,6 +1833,7 @@ meta_wayland_data_device_set_primary (MetaWaylandDataDevice *data_device,
 
       set_selection_source (data_device, META_SELECTION_PRIMARY,
                             selection_source);
+      g_object_unref (selection_source);
     }
   else
     {