[issue7701] fix output string length for binascii.b2a_uu()

[STINNER Victor]

Changes by STINNER Victor <victor.stinner at haypocalc.com>:


Removed file: http://bugs.python.org/file15871/binascii_b2a_uu_length.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7701>
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