Maintenance: Avoid copy in ACLChecklist::calcImplicitAnswer() #194

Job	Run time
functionality-tests	17m 21s
CodeQL-tests	34m 29s
source-maintenance-tests	2m 54s
build-tests(ubuntu-22.04,gcc,default)	5m 57s
build-tests(ubuntu-22.04,gcc,minimal)	4m 13s
build-tests(ubuntu-22.04,gcc,maximus)	5m 51s
build-tests(ubuntu-22.04,clang,default)	6m 4s
build-tests(ubuntu-22.04,clang,minimal)	4m 59s
build-tests(ubuntu-22.04,clang,maximus)	6m 54s
	1h 28m 42s

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