objects: Dump libvlc when we have some leak related errors.

src/misc/objects.c

@@ -371,6 +371,8 @@ static void vlc_object_destroy( vlc_object_t *p_this )
                      p_this->pp_children[i]->psz_object_name );
         }
         fflush(stderr);
+        /* Dump libvlc object to ease debugging */
+        vlc_object_dump( p_this->p_libvlc );
         abort();
     }