CoAP: added missing UIP_LLH_LEN in buffer size check as described by
Laurent Deru in
#endif /* WITH_DTLS */
/* sanity check for configured values */
-#if COAP_MAX_PACKET_SIZE > (UIP_BUFSIZE - UIP_IPH_LEN - UIP_UDPH_LEN)
+#if COAP_MAX_PACKET_SIZE > (UIP_BUFSIZE - UIP_LLH_LEN - UIP_IPH_LEN - UIP_UDPH_LEN)
#error "UIP_CONF_BUFFER_SIZE too small for COAP_MAX_CHUNK_SIZE"
#endif
