PileUpMT: Fix clang warning.

Binding reference to temporary in range-for.

This merge request affects 1 package:

• Control/PileUpMT

This merge request affects 1 file:

• Control/PileUpMT/src/BatchedMinbiasSvc.cxx

Adding @ssnyder as watcher

added Core main review-pending-level-1 labels

CI Result SUCCESS (hash 79645561)

	Athena
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 2506]

removed review-pending-level-1 label

added review-approved label

merged

mentioned in commit 299f8186