fix invalid write in pixel geometry

As title - see ATLITKSW-129

Avoids invalid read, no changes in RunUpgradeTests.py

cc @nova @tlari

added 21.9 label

This merge request affects 1 file:

• InnerDetector/InDetDetDescr/PixelLayouts/BarrelInclinedRef/src/GeoPixelLadderInclRef.cxx

Adding @goetz ,@lshan ,@battagl ,@sroe ,@stsuno as watchers

added InnerDetector review-pending-level-1 labels

CI Result SUCCESS (hash 69706690)

	Athena
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 45131]

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

merged

mentioned in commit 4f0e7ffb

added sweep:ignore label