macOS

Small fixes for non-fully-parallel sweep #10369

Job	Run time
make (test-bundled-gems, macos-14)	11m 30s
make (test-bundler-parallel, macos-14)	11m 27s
make (test-all, --repeat-count=2, macos-14)	4m 25s
make (check, macos-14)	3m 37s
make (check, macos-14, --with-gcc=gcc-14)	6m 25s
make (check, macos-15)	3m 51s
make (check, macos-14, --with-jemalloc --with-opt-dir=$(brew --prefix jemalloc))	4m 2s
make (check, macos-14, --with-gmp)	3m 43s
macOS result	3s
	49m 3s

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