[issue17666] Extra gzip headers breaks _read_gzip_header

[Roundup Robot]

Roundup Robot added the comment:

New changeset c31ff361cde3 by Serhiy Storchaka in branch '3.2':
Close #17666: Fix reading gzip files with an extra field.
http://hg.python.org/cpython/rev/c31ff361cde3

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stage: commit review -> committed/rejected

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17666>
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