Pythia8_i: HepMC3 for the first event evt->weights vector was too short - fixing

Pythia8_i: for HepMC3 in the first event evt->weights vector was too short - fixing

assigned to @ewelina

This merge request affects 1 package:

• Generators/Pythia8_i

This merge request affects 1 file:

• Generators/Pythia8_i/src/Pythia8_i.cxx

added Generators master review-pending-level-1 labels

The system determined that CI tests (with names matching "^CITest_Trigger.*$") are not needed for this code change. They are not run. This is not an indicator to restart the job.

CI Result SUCCESS (hash 21c80cf2)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
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
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthAnalysis: number of compilation errors 0, warnings 0
DetCommon: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 57594]

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

merged

mentioned in commit 98a997cd

added sweep:ignore label