fix `lib_spec` #3473

Job	Run time
check_format	1m 39s
x86_64-gnu-test (1.7.3)	34m 3s
x86_64-gnu-test (1.8.2)	34m 3s
x86_64-gnu-test-preview_mt	5m 31s
x86_64-gnu-test (1.9.2)	34m 23s
x86_64-gnu-test (1.10.1)	34m 55s
x86_64-gnu-test (1.11.2)	35m 13s
x86_64-musl-test	39m 15s
x86_64-gnu-test (1.12.2)	33m 23s
x86_64-gnu-test (1.13.3)	34m 7s
x86_64-gnu-test (1.14.0)	34m 26s
x86_64-gnu-test (1.0.0, FLAGS=-Dwithout_ffi USE_PCRE1=true)	34m 5s
x86_64-gnu-test (1.1.1, FLAGS=-Dwithout_ffi USE_PCRE1=true)	34m 47s
x86_64-gnu-test (1.2.2, USE_PCRE1=true)	35m 42s
x86_64-gnu-test (1.3.2, USE_PCRE1=true)	37m 22s
x86_64-gnu-test (1.4.1, USE_PCRE1=true)	35m 11s
x86_64-gnu-test (1.5.1, USE_PCRE1=true)	34m 49s
x86_64-gnu-test (1.6.2, USE_PCRE1=true)	34m 7s
	9h 27m 1s

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