Fix crashes in analysis tree converter

Add protections when tracking and/or track matching delivers strange results.

analysis/common/analysis_tree_converter/CbmFsdHitsConverter.cxx

@@ -266,6 +266,11 @@ void CbmFsdHitsConverter::ProcessData(CbmEvent* event)
 
     if ((bestMatchedIndex >= 0) && (bestChi2 > fsdgtrack_minChi2_) && (bestChi2 < fsdgtrack_maxChi2_)) {
       const auto trackIndex = event ? event->GetIndex(ECbmDataType::kGlobalTrack, bestMatchedIndex) : bestMatchedIndex;
+      if (trackIndex > cbm_global_tracks_->GetEntriesFast()) {
+        LOG(error) << "Trying to access element " << trackIndex << " which is out ot the global track array of size"
+                   << cbm_global_tracks_->GetEntriesFast();
+        continue;
+      }
       const auto* globalTrack   = static_cast<const CbmGlobalTrack*>(cbm_global_tracks_->At(trackIndex));
       FairTrackParam param_last = *(globalTrack->GetParamLast());
       FairTrackParam param_fsd  = ExtrapolateGtrack(hitZ, param_last);