Optimization: Do not zero-terminate Server::inBuf (#1889) #3679

Job	Run time
functionality-tests	16m 59s
CodeQL-tests	39m 24s
source-maintenance-tests	2m 54s
build-tests(ubuntu-22.04,gcc,default)	11m 47s
build-tests(ubuntu-22.04,gcc,minimal)	6m 14s
build-tests(ubuntu-22.04,gcc,maximus)	13m 7s
build-tests(ubuntu-22.04,clang,default)	13m 11s
build-tests(ubuntu-22.04,clang,minimal)	8m 30s
build-tests(ubuntu-22.04,clang,maximus)	15m 40s
build-tests(macos-14,clang,default)	10m 47s
build-tests(macos-14,clang,minimal)	7m 5s
build-tests(macos-14,clang,maximus)	11m 16s
	2h 36m 54s

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