Fixed defects

List of Defects

Error: CLANG_WARNING: [#def1]
buildah-1.35.1-build/buildah-1.35.1/vendor/github.com/containers/storage/pkg/unshare/unshare.c:235:12: warning[core.NonNullParamChecker]: Null pointer passed to 1st parameter expecting 'nonnull'
#  233|   		return -1;
#  234|   	}
#  235|-> 	exename = basename(argv[0]);
#  236|   	mmfd = syscall(SYS_memfd_create, exename, (long) MFD_ALLOW_SEALING | MFD_CLOEXEC);
#  237|   	if (mmfd == -1) {

Error: GCC_ANALYZER_WARNING (CWE-688): [#def2]
buildah-1.35.1-build/buildah-1.35.1/vendor/github.com/containers/storage/pkg/unshare/unshare.c: scope_hint: In function ‘copy_self_proc_exe’
buildah-1.35.1-build/buildah-1.35.1/vendor/github.com/containers/storage/pkg/unshare/unshare.c:235:19: warning[-Wanalyzer-null-argument]: use of NULL where non-null expected
buildah-1.35.1-build/buildah-1.35.1/vendor/github.com/containers/storage/pkg/unshare/unshare.c:14: included_from: Included from here.
/usr/include/string.h:540:14: note: argument 1 of ‘basename’ must be non-null
#  233|   		return -1;
#  234|   	}
#  235|-> 	exename = basename(argv[0]);
#  236|   	mmfd = syscall(SYS_memfd_create, exename, (long) MFD_ALLOW_SEALING | MFD_CLOEXEC);
#  237|   	if (mmfd == -1) {

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