From Peng Di:

GIOP request_id used for sub dissectors is not assigned when decoding GIOP 1.2 Request message.

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7516

svn path=/trunk/; revision=43955

epan/dissectors/packet-giop.c

@@ -3606,6 +3606,7 @@ dissect_giop_request_1_2 (tvbuff_t * tvb, packet_info * pinfo,
     }
 
   request_id = get_CDR_ulong(tvb, &offset, stream_is_big_endian,GIOP_HEADER_SIZE);
+  header->req_id = request_id;
   if (check_col(pinfo->cinfo, COL_INFO))
     {
       col_append_fstr(pinfo->cinfo, COL_INFO, " id=%u", request_id);