message: memset messages to fill gaps
diff: @@ -506,6 +506,7 @@ static void SendPeerSetupMsg(WS_ReaderInfo reader, int reversePeer, int myRank)
  CMConnection conn = reader->Connections[reversePeer].CMconn;
  SstStream Stream = reader->ParentStream;
  struct _PeerSetupMsg setup;
  + memset(&setup, 0, sizeof(setup));
  setup.RS_Stream = reader->Connections[reversePeer].RemoteStreamID;
  setup.WriterRank = myRank;
  setup.WriterCohortSize = Stream->CohortSize;
  @@ -1824,6 +1825,7 @@ static void ActOnTSLockStatus(SstStream Stream, long Timestep)
  (Stream->Readers[i]->CommPatternLockTimestep == -1))
  {
  struct _CommPatternLockedMsg Msg;
  + memset(&Msg, 0, sizeof(Msg));
  Stream->Readers[i]->CommPatternLockTimestep = Timestep;
  if (Stream->DP_Interface->WSRreadPatternLocked)
  {
  