Fix warnings #1481

Job	Run time
analyze	5m 23s
calc-version	16s
CodeQL-Analyze	5m 32s
integration-test (AcrApi, ef)	2m 46s
integration-test (AcrApi, mongodb)	2m 31s
unit-test	4m 46s
integration-test (DicomDimseScp, ef)	4m 9s
integration-test (DicomDimseScp, mongodb)	4m 8s
integration-test (DicomDimseScu, ef)	2m 38s
integration-test (DicomDimseScu, mongodb)	2m 30s
integration-test (DicomWebExport, ef)	2m 28s
integration-test (DicomWebExport, mongodb)	2m 36s
integration-test (DicomWebStow, ef)	4m 40s
integration-test (DicomWebStow, mongodb)	4m 30s
integration-test (HealthLevel7, ef)	3m 24s
integration-test (HealthLevel7, mongodb)	3m 15s
integration-test (Fhir, ef)	3m 9s
integration-test (Fhir, mongodb)	2m 57s
integration-test (RemoteAppExecutionPlugIn, ef)	2m 13s
integration-test (RemoteAppExecutionPlugIn, mongodb)	2m 2s
docs	4m 36s
build (ubuntu-latest)	4m 19s
build (windows-latest)	4m 34s
Publish to GitHub Packages	0s
release	0s
	1h 19m 22s

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