mesh: Remove unsigned typing to returns in heartbeat
Removes U-suffix from signed return codes in heartbeat.c.
this is port of
@@ -91,7 +91,7 @@ static int heartbeat_send(const struct bt_mesh_send_cb *cb, void *cb_data)
* removed.
*/
if (!tx.sub || pub.dst == BT_MESH_ADDR_UNASSIGNED) {
- return 0U;
+ return 0;
}
hb.init_ttl = pub.ttl;
