CaloUtils: Fix cppcheck warnings.

Prefer preincrement for iterator classes.

This merge request affects 1 package:

• Calorimeter/CaloUtils

This merge request affects 2 files:

• Calorimeter/CaloUtils/CaloUtils/CaloCollectionHelper.h
• Calorimeter/CaloUtils/src/CaloTopoTowerBuilderTool.cxx

Adding @pavol as watcher

added Calorimeter JetEtmiss master review-pending-level-1 labels

CI Result SUCCESS (hash 4e11bade)

	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 34893]

merged

mentioned in commit c7a9bf01

added sweep:ignore label