Dont try to find LHCbIDs of neutral particles

Phys/DecayTreeTupleMC/src/MCTupleToolTOSHLT2.cpp

@@ -70,7 +70,13 @@ void MCTupleToolTOSHLT2::fetchLHCbIDsFromRecoParticle( const LHCb::Particle& par
 
   if ( part.isBasicParticle() ) {
     // We can just get the protoparticle and its IDs
-    bucket_of_ids.emplace_back( part.proto()->track()->lhcbIDs() );
+    if ( part.proto()->track() == nullptr ){
+      if ( part.charge() != 0 ) {
+        error() << "Particle with ID " << part.particleID() << " has charge " << part.charge() << " but no track, therefore cant access LHCbIDs." << endmsg;
+      } // Dont expect a neutral particle to have a track or hits, so don't look for them
+    } else {
+      bucket_of_ids.emplace_back( part.proto()->track()->lhcbIDs() );
+    }
   } else {
     const auto& children = part.daughters();
     for ( const auto& child : children ) { fetchLHCbIDsFromRecoParticle( *child, bucket_of_ids ); }