Fix `editline` Makefile #1264

Job	Run time
pre_job	4s
test-compile (ubuntu-latest, clang-14)	11m 17s
test-compile (ubuntu-latest, gcc-10)	11m 28s
test-compile (ubuntu-latest, clang)	21m 41s
test-compile (ubuntu-latest, gcc)	22m 47s
test-compile (macos-13, clang)	22m 16s
test-compile (ubuntu-20.04, clang-10)	12m 5s
	1h 41m 38s

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