Properly handle GNUtar long file reading #11

Job	Run time
Ruby 2.7 - ubuntu-20.04	25s
Ruby 3.0 - ubuntu-20.04	19s
Ruby 3.1 - ubuntu-20.04	13s
Ruby 3.2 - ubuntu-20.04	14s
Ruby 3.3 - ubuntu-20.04	27s
Ruby head - ubuntu-20.04	15s
Ruby jruby - ubuntu-20.04	1m 4s
Ruby jruby-head - ubuntu-20.04	1m 10s
Ruby truffleruby - ubuntu-20.04	33s
Ruby truffleruby-head - ubuntu-20.04	41s
Ruby mingw - windows-latest	1m 16s
Ruby mswin - windows-latest	1m 0s
Ruby jruby - windows-latest	2m 46s
Ruby 2.7 - macos-latest	35s
Ruby 3.0 - macos-latest	17s
Ruby 3.1 - macos-latest	17s
Ruby 3.2 - macos-latest	17s
Ruby head - ubuntu-22.04	8s
Ruby 3.1 - ubuntu-22.04	13s
Ruby 3.2 - ubuntu-22.04	20s
Ruby 3.3 - ubuntu-22.04	23s
Ruby truffleruby-head - ubuntu-22.04	40s
	13m 33s

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