[mutter] screen-cast/window/src: Fix signal handler types

[Marge Bot <marge-bot src gnome org>]

commit c5410b61d2c704445fbfda6baca71743a74cc2f0
Author: Jonas Ådahl <jadahl gmail com>
Date:   Fri Apr 29 21:05:44 2022 +0200

    screen-cast/window/src: Fix signal handler types
    
    Should be gulong, not unsigned long.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2393>

 src/backends/meta-screen-cast-window-stream-src.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/src/backends/meta-screen-cast-window-stream-src.c 
b/src/backends/meta-screen-cast-window-stream-src.c
index 3fa932b4b1..9e77db021e 100644
--- a/src/backends/meta-screen-cast-window-stream-src.c
+++ b/src/backends/meta-screen-cast-window-stream-src.c
@@ -35,10 +35,10 @@ struct _MetaScreenCastWindowStreamSrc
 
   MetaScreenCastWindow *screen_cast_window;
 
-  unsigned long screen_cast_window_damaged_handler_id;
-  unsigned long screen_cast_window_destroyed_handler_id;
-  unsigned long position_invalidated_handler_id;
-  unsigned long cursor_changed_handler_id;
+  gulong screen_cast_window_damaged_handler_id;
+  gulong screen_cast_window_destroyed_handler_id;
+  gulong position_invalidated_handler_id;
+  gulong cursor_changed_handler_id;
 
   gboolean cursor_bitmap_invalid;
 };