TBRec: Fix cppcheck warnings.

Fix cppcheck warnings + some general cleanup.

This merge request affects 1 package:

• TestBeam/TBRec

This merge request affects 75 files. Since this is a long list, it will not be printed.

Adding @amorley as watcher

added Egamma TestBeam master review-pending-level-1 labels

CI Result SUCCESS (hash 63dd270a)

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

Full details available on this CI monitor view
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 30764]

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

mentioned in commit 53643df8

merged

added sweep:ignore label