message: from Ivan Vorobyev: fix HLT access to vertex
diff: @@ -658,9 +658,11 @@ void AliTPCcalibAlign::ExportTrackPoints(AliVEvent *event){
  AliESDVertex tpcVtx;
  // get the primary vertex TPC
  if (ntracks>kMinVertexTracks) {
  - if ( (event->GetPrimaryVertexSPD(tpcVtx)) == 0) tpcVertex=&tpcVtx;
  + if ( (event->GetPrimaryVertexSPD(tpcVtx)) == 0 ) {
  + tpcVertex=&tpcVtx;
  if (tpcVertex->GetNContributors()<kMinVertexTracks) tpcVertex=0;
  }
  + }
  //
  Float_t dca0[2];
  // Float_t dca1[2];
  