[issue25889] Find_BOM accepts a char*, but is passed an unsigned char*; and related usage

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka at gmail.com>:


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assignee:  -> serhiy.storchaka
nosy: +serhiy.storchaka
versions: +Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25889>
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