libsepol/cil: Fix detected RESOURCE_LEAK (CWE-772) #568

Job	Run time
build (gcc, 3.12, 3.3)	1m 32s
build (gcc, 3.12, 3.3, test-flags-override)	1m 24s
build (gcc, 3.12, 3.3, test-debug)	1m 30s
build (gcc, 3.12, 3.3, linker-bfd)	1m 40s
build (gcc, 3.12, 3.3, linker-gold)	1m 30s
build (gcc, 3.11, 3.3)	1m 39s
build (gcc, 3.10, 3.3)	1m 41s
build (gcc, 3.9, 3.3)	1m 37s
build (gcc, 3.8, 3.3)	1m 41s
build (gcc, 3.7, 3.3)	1m 45s
build (gcc, pypy3.7, 3.3)	1m 55s
build (gcc, 3.12, 3.2)	1m 32s
build (gcc, 3.12, 3.1)	1m 37s
build (gcc, 3.12, 3.0)	1m 36s
build (gcc, 3.12, 2.7)	1m 51s
build (gcc, 3.12, 2.6)	1m 44s
build (gcc, 3.12, 2.5)	1m 50s
build (clang, 3.12, 3.3)	1m 43s
build (clang, 3.12, 3.3, test-flags-override)	1m 28s
build (clang, 3.12, 3.3, test-debug)	1m 31s
build (clang, 3.11, 3.3)	1m 35s
build (clang, 3.10, 3.3)	1m 35s
build (clang, 3.9, 3.3)	1m 45s
build (clang, 3.8, 3.3)	1m 42s
build (clang, 3.7, 3.3)	1m 57s
build (clang, pypy3.7, 3.3)	2m 13s
build (clang, 3.12, 3.2)	1m 47s
build (clang, 3.12, 3.1)	1m 40s
build (clang, 3.12, 3.0)	1m 44s
build (clang, 3.12, 2.7)	1m 59s
build (clang, 3.12, 2.6)	1m 55s
build (clang, 3.12, 2.5)	1m 55s
build (gcc, 3.12, 3.3, sanitizers)	1m 58s
	56m 31s

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