c-e: tag DeleteConnectionResultFunc with a special argument

src/connection-editor/connection-helpers.c

@@ -732,7 +732,7 @@ delete_cb (GObject *connection,
 	g_clear_error (&error);
 
 	if (result_func)
-		(*result_func) (NM_REMOTE_CONNECTION (connection), error == NULL, user_data);
+		(*result_func) (FUNC_TAG_DELETE_CONNECTION_RESULT_CALL, NM_REMOTE_CONNECTION (connection), error == NULL, user_data);
 }
 
 void

src/connection-editor/connection-helpers.h

@@ -66,7 +66,11 @@ void new_connection_of_type (GtkWindow *parent_window,
                              NewConnectionResultFunc result_func,
                              gpointer user_data);
 
-typedef void (*DeleteConnectionResultFunc) (NMRemoteConnection *connection,
+struct _func_tag_delete_connection_result;
+#define FUNC_TAG_DELETE_CONNECTION_RESULT_IMPL struct _func_tag_delete_connection_result *_dummy
+#define FUNC_TAG_DELETE_CONNECTION_RESULT_CALL ((struct _func_tag_delete_connection_result *) NULL)
+typedef void (*DeleteConnectionResultFunc) (FUNC_TAG_DELETE_CONNECTION_RESULT_IMPL,
+                                            NMRemoteConnection *connection,
                                             gboolean deleted,
                                             gpointer user_data);
 

src/connection-editor/nm-connection-list.c

@@ -359,7 +359,10 @@ do_edit (NMConnectionList *list)
 }
 
 static void
-delete_connection_cb (NMRemoteConnection *connection, gboolean deleted, gpointer user_data)
+delete_connection_cb (FUNC_TAG_DELETE_CONNECTION_RESULT_IMPL,
+                      NMRemoteConnection *connection,
+                      gboolean deleted,
+                      gpointer user_data)
 {
 	NMConnectionList *list = user_data;
 

src/connection-editor/page-master.c

@@ -485,7 +485,8 @@ connection_double_clicked_cb (GtkTreeView *tree_view,
 }
 
 static void
-delete_result_cb (NMRemoteConnection *connection,
+delete_result_cb (FUNC_TAG_DELETE_CONNECTION_RESULT_IMPL,
+                  NMRemoteConnection *connection,
                   gboolean deleted,
                   gpointer user_data)
 {