Merge pull request #3012 from purecloudlabs/bug/rport_param_corrupts_…

…via_header

add_local_rport script function corrupts VIA header params

(cherry picked from commit 8f41fcc)

msg_translator.c

@@ -2194,8 +2194,10 @@ char * build_req_buf_from_sip_req( struct sip_msg* msg,
 		if(id_buf!=0) {
 			memcpy(extra_params.s, id_buf, id_len);
 			pkg_free(id_buf);
-		} else if (via_params)
+		} else if (via_params) {
 			memcpy(extra_params.s, via_params->s, via_params->len);
+			id_len = via_params->len;
+		}
 		memcpy(extra_params.s+id_len, RPORT, RPORT_LEN-1);
 		extra_params.s[extra_params.len]='\0';
 		LM_DBG("extra param added: <%.*s>\n",extra_params.len, extra_params.s);