Update spectraTOF.cxx

Author: RD0407

PWGLF/Tasks/Nuspex/spectraTOF.cxx

@@ -1887,7 +1887,9 @@ struct tofSpectra {
     if (!isParticleEnabled<i>()) { // Check if the particle is enabled
       return;
     }
-
+    if (!collision.has_mcCollision()) {
+      return; // Skips processing if no corresponding MC collision is found (rare case!)
+    }
     const auto& mcCollision = collision.mcCollision_as<GenMCCollisions>();
     const float multiplicity = getMultiplicity(collision);
     const int occupancy = collision.trackOccupancyInTimeRange();