changed coap message type to non-confirmable. (ARMmbed#1706)

Author: deepakvenugopal

source/6LoWPAN/Thread/thread_extension_bbr.c

@@ -645,7 +645,7 @@ static int thread_extension_bbr_bmlr_req_send(int8_t service_id, const uint8_t b
     tr_debug("thread BMLR.ntf send; timeout: %"PRIu32, timeout);
 
     coap_service_request_send(service_id, COAP_REQUEST_OPTIONS_NONE, br_addr, THREAD_MANAGEMENT_PORT,
-                              COAP_MSG_TYPE_CONFIRMABLE, COAP_MSG_CODE_REQUEST_POST, THREAD_URI_BBR_BMLR_NTF, COAP_CT_OCTET_STREAM, payload, ptr - payload, NULL);
+            COAP_MSG_TYPE_NON_CONFIRMABLE, COAP_MSG_CODE_REQUEST_POST, THREAD_URI_BBR_BMLR_NTF, COAP_CT_OCTET_STREAM, payload, ptr - payload, NULL);
     return 0;
 }