tm: allow t_on_reply() in branch_route

- same for t_on_failure()
- reported by Sebastian Damm

modules/tm/tm.c

@@ -402,9 +402,9 @@ static cmd_export_t cmds[]={
 	{"t_relay_cancel",     w_t_relay_cancel,        0, 0,
 			REQUEST_ROUTE},
 	{"t_on_failure",       w_t_on_negative,         1, fixup_on_failure,
-			REQUEST_ROUTE | FAILURE_ROUTE | TM_ONREPLY_ROUTE },
+			REQUEST_ROUTE | FAILURE_ROUTE | TM_ONREPLY_ROUTE | BRANCH_ROUTE },
 	{"t_on_reply",         w_t_on_reply,            1, fixup_on_reply,
-			REQUEST_ROUTE | FAILURE_ROUTE | TM_ONREPLY_ROUTE },
+			REQUEST_ROUTE | FAILURE_ROUTE | TM_ONREPLY_ROUTE | BRANCH_ROUTE },
 	{"t_on_branch",       w_t_on_branch,         1, fixup_on_branch,
 			REQUEST_ROUTE | FAILURE_ROUTE },
 	{"t_check_status",     t_check_status,          1, fixup_t_check_status,