PSEA - IEI DNN - This is the last IEI in the message.

Before this commit each time the message was captured, it entered the
default switch statement, which is meant to show that  we received an
uknown IEI.

Now after the DNN IEI, we set offset=msg_length, to exit the
switch.

openair3/NAS/COMMON/ESM/MSG/PduSessionEstablishmentAccept.c

@@ -177,8 +177,7 @@ void capture_pdu_session_establishment_accept_msg(uint8_t *buffer, uint32_t msg_
         } else
           LOG_E(NAS, "PDU SESSION ESTABLISHMENT ACCEPT - DNN IE has invalid length\n");
 
-        offset += psea_msg.dnn_ie.dnn_length;
-        psea_iei = *(buffer + offset++);
+        offset = msg_length;
         break;
 
       default: