message: Fix AliPerformanceDEdx to use VertexTracks
diff: @@ -251,7 +251,7 @@ void AliPerformanceDEdx::ProcessInnerTPC(AliMCEvent* const mcev, AliVTrack *cons
  if( IsUseTrackVertex() ) {
  // Relate TPC inner params to prim. vertex
  AliESDVertex vertex;
  - vEvent->GetPrimaryVertex(vertex);
  + vEvent->GetPrimaryVertexTracks(vertex);
  const AliVVertex *vVertex = &vertex;
  Double_t x[3]; etpTrack->GetXYZ(x);
  Double_t b[3]; AliTracker::GetBxByBz(x,b);
  