[Pidgin] #16203: Patch for #15375 defect ticket

[Pidgin]

#16203: Patch for #15375 defect ticket
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 Reporter:  romankr  |      Owner:
     Type:  patch    |     Status:  new
Milestone:           |  Component:  pidgin (gtk)
  Version:  2.10.9   |   Keywords:
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 '''Brief description of #15375:'''
 Identical nicknames with different case in (XMPP) chatroom: both disappear
 when one leaves

 '''Why it was so:'''
 Case-insensitive string comparsion function was used when buddy list is
 being cleaned from recently leaved users. This caused a removal of extra
 items in the buddy list.

 '''What has been done:'''
 Case-insensitive string comparsion function has been replaced with case-
 sensitive one (g_utf8_collate()).

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Ticket URL: <https://developer.pidgin.im/ticket/16203>
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