ByteStreamCnvSvc: Fix memory leak.

Leaked AttributeListSpecification.

This merge request affects 1 package:

• Event/ByteStreamCnvSvc

This merge request affects 1 file:

• Event/ByteStreamCnvSvc/src/EventSelectorByteStream.cxx

Adding @tadej as watcher

added EDM master review-pending-level-1 labels

CI Result SUCCESS (hash a1dba213)

	Athena	AthSimulation	AthGeneration	AnalysisBase
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
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 25428]

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

merged

mentioned in commit 3925b34b

added sweep:ignore label