build

Fix memory leak reported by clang tool #224

Job	Run time
build (fedora:latest, true)	39s
build (fedora:latest, true)	39s
build (quay.io/centos/centos:stream10-development, true)	1m 22s
build (quay.io/centos/centos:stream10-development, true)	1m 22s
build (quay.io/centos/centos:stream9, true)	1m 29s
build (quay.io/centos/centos:stream9, true)	1m 29s
build (debian:testing, true)	2m 59s
build (debian:testing, true)	2m 59s
build (debian:latest, true)	2m 39s
build (debian:latest, true)	2m 39s
build (ubuntu:latest, true)	3m 0s
build (ubuntu:latest, true)	3m 0s
build (ubuntu:rolling, true)	3m 26s
build (ubuntu:rolling, true)	3m 26s
build (ubuntu:noble, true)	3m 16s
build (ubuntu:noble, true)	3m 16s
build (ubuntu:jammy, true)	2m 20s
build (ubuntu:jammy, true)	2m 20s
build (ubuntu:focal, true)	2m 11s
build (ubuntu:focal, true)	2m 11s
build (quay.io/fedora/fedora:rawhide, false)	46s
build (quay.io/fedora/fedora:rawhide, false)	47s
build (ubuntu:devel, false)	3m 26s
build (ubuntu:devel, false)	3m 26s
	55m 7s

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