[gnome-builder] egg-signal-group: Improve invalid target warning

[Garrett Regier <gregier src gnome org>]

commit 768344c9a0289b281a8c8fdfe3c67def1364b6d9
Author: Garrett Regier <garrettregier gmail com>
Date:   Wed May 13 14:30:56 2015 -0700

    egg-signal-group: Improve invalid target warning

 contrib/egg/egg-signal-group.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/contrib/egg/egg-signal-group.c b/contrib/egg/egg-signal-group.c
index c8a994f..d226ddc 100644
--- a/contrib/egg/egg-signal-group.c
+++ b/contrib/egg/egg-signal-group.c
@@ -225,8 +225,10 @@ egg_signal_group_check_target_type (EggSignalGroup *self,
   if ((target != NULL) &&
       !g_type_is_a (G_OBJECT_TYPE (target), self->target_type))
     {
-      g_warning ("Attempt to set EggSignalGroup:target to something other than %s",
-                 g_type_name (self->target_type));
+      g_warning ("Failed to set EggSignalGroup of target type %s"
+                 "using target %p of type %s",
+                 g_type_name (self->target_type),
+                 target, G_OBJECT_TYPE_NAME (target));
       return FALSE;
     }