ddsim: fix bug when using a UserParticleHandler

DDG4/python/DDSim/DD4hepSimulation.py

@@ -418,7 +418,7 @@ class DD4hepSimulation(object):
     if self.part.enableDetailedHitsAndParticleInfo:
       self.part.setDumpDetailedParticleInfo( kernel, DDG4 )
 
-    self.part.setupUserParticleHandler(part)
+    self.part.setupUserParticleHandler(part, kernel, DDG4)
 
     #=================================================================================
 

DDG4/python/DDSim/Helper/ParticleHandler.py

@@ -102,7 +102,7 @@ class ParticleHandler( ConfigHelper ):
     kernel.eventAction().adopt(evt)
     evt.enableUI()
 
-  def setupUserParticleHandler(self, part):
+  def setupUserParticleHandler(self, part, kernel, DDG4):
     """Create the UserParticleHandler and configure it.
 
     FIXME: this is not extensible at the moment