paging: Give the msgb that caused paging_stop up to the paging callback

The handler might need to know some info of the paging response

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/openbsc/src/gsm_04_08_utils.c b/openbsc/src/gsm_04_08_utils.c
index e8d54ac..b632933 100644
--- a/openbsc/src/gsm_04_08_utils.c
+++ b/openbsc/src/gsm_04_08_utils.c
@@ -309,7 +309,7 @@
 	dispatch_signal(SS_PAGING, S_PAGING_SUCCEEDED, &sig_data);
 
 	/* Stop paging on the bts we received the paging response */
-	paging_request_stop(conn->bts, subscr, conn);
+	paging_request_stop(conn->bts, subscr, conn, msg);
 	return 0;
 }