22.0-coverity-BCM_GeoModel

Solve coverity defects in BCM_Builder and BLM_Builder. In both cases, dereference of a nullptr was possible, but will now generate an Athena error.

This merge request affects 2 packages:

• InnerDetector/InDetDetDescr/BCM_GeoModel
• InnerDetector/InDetDetDescr/BLM_GeoModel

Affected files list will not be printed in this case

Adding @goetz ,@sroe as watchers

added InnerDetector master review-pending-level-1 labels

CI Result SUCCESS (hash 761cb632)

	Athena	AthSimulation	AthGeneration	AnalysisBase	AthAnalysis	DetCommon
externals
cmake
make
required tests
optional 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 52110]

added review-approved label

removed review-pending-level-1 label

merged

mentioned in commit 8f44d69e

added sweep:ignore label