macos

fix: prevent segfault in StringIO#seek with SEEK_END on null device #473

Job	Run time
ruby-versions / Generate Ruby versions	3s
macos-13 3.2	28s
macos-13 2.7	1m 34s
macos-13 3.4	30s
macos-13 3.0	41s
macos-13 debug	37s
macos-13 3.1	28s
macos-13 head	35s
macos-14 2.7	30s
macos-13 3.3	29s
macos-14 3.1	16s
macos-14 3.0	17s
macos-14 3.4	16s
macos-14 3.2	15s
macos-14 debug	21s
macos-14 head	17s
macos-14 3.3	16s
	7m 53s

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