xAODCaloEventCnv+LArROD: Fix clang warnings.

Don't use references in a range-for if the object must be copied.

This merge request affects 2 packages:

• Event/xAOD/xAODCaloEventCnv
• LArCalorimeter/LArROD

Affected files list will not be printed in this case

Adding @bcarlson ,@joheinri ,@akraszna ,@pavol ,@damazio as watchers

added EDM JetEtmiss LAr master review-pending-level-1 labels

CI Result SUCCESS (hash f1a1a431)

	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 31610]

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

merged

mentioned in commit 37da7ca3

added sweep:ignore label