G4AtlasAlg: Fix case where shadow truth event is not used (ATLASSIM-6614)

Fix bug in G4AtlasAlg accidentally introduced by !63059 (merged).

added bugfix label

This merge request affects 1 package:

• Simulation/G4Atlas/G4AtlasAlg

This merge request affects 1 file:

• Simulation/G4Atlas/G4AtlasAlg/src/G4AtlasAlg.cxx

Adding @jchapman as watcher

added 23.0 Simulation review-pending-level-1 labels

Hi @tsulaia, Would you mind setting this one to merge if/when the CI succeeds please? It fixes a lot of Simulation ART jobs running simulation outside ISF, so I am quite keen to get the fix merged. It only affects simulation outside ISF, so cannot affect production output. Cheers, John

resolved all threads

CI Result SUCCESS (hash d7629844)

	Athena	AthSimulation
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 73324]

added review-approved label and removed review-pending-level-1 label

Changes and CI look fine. Approving.

Kira (L1)

merged

mentioned in commit ff5a644e

mentioned in merge request !63939 (merged)