Fix a NULL pointer error in invoke of ast_log

channels/chan_brcm.c

@@ -1439,7 +1439,7 @@ struct brcm_subchannel* brcm_get_active_subchannel(const struct brcm_pvt *p)
 				}
 				break;
 			default:
-				ast_log(LOG_WARNING, "Unhandled channel state %d\n", sub->channel_state);
+				ast_log(LOG_WARNING, "Unhandled channel state %d\n", p->sub[i]->channel_state);
 				break;
 		}
 	}