libselinux/fuzz: readjust load_mmap() update #503

Job	Run time
build (gcc, 3.12, 3.3)	1s
build (gcc, 3.12, 3.3, test-flags-override)	1s
build (gcc, 3.12, 3.3, test-debug)	1s
build (gcc, 3.12, 3.3, linker-bfd)	1s
build (gcc, 3.12, 3.3, linker-gold)	1s
build (gcc, 3.11, 3.3)	24s
build (gcc, 3.10, 3.3)	23s
build (gcc, 3.9, 3.3)	1s
build (gcc, 3.8, 3.3)	1s
build (gcc, 3.7, 3.3)	1s
build (gcc, pypy3.7, 3.3)	1s
build (gcc, 3.12, 3.2)	1s
build (gcc, 3.12, 3.1)	1s
build (gcc, 3.12, 3.0)	1s
build (gcc, 3.12, 2.7)	10s
build (gcc, 3.12, 2.6)	12s
build (gcc, 3.12, 2.5)	11s
build (clang, 3.12, 3.3)	24s
build (clang, 3.12, 3.3, test-flags-override)	24s
build (clang, 3.12, 3.3, test-debug)	23s
build (clang, 3.11, 3.3)	25s
build (clang, 3.10, 3.3)	25s
build (clang, 3.9, 3.3)	24s
build (clang, 3.8, 3.3)	11s
build (clang, 3.7, 3.3)	6s
build (clang, pypy3.7, 3.3)	13s
build (clang, 3.12, 3.2)	26s
build (clang, 3.12, 3.1)	25s
build (clang, 3.12, 3.0)	24s
build (clang, 3.12, 2.7)	12s
build (clang, 3.12, 2.6)	14s
build (clang, 3.12, 2.5)	12s
build (gcc, 3.12, 3.3, sanitizers)	1s
	6m 21s

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