[Pidgin] #1344: fix for some build warnings

[Pidgin]

#1344: fix for some build warnings
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 Reporter:  o_sukhodolsky  |       Type:  patch
   Status:  new            |   Priority:  minor
Component:  pidgin (gtk)   |    Version:  2.0.1
 Keywords:                 |    Pending:  0    
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 here is a patch which fixes number of build warnings.
 Most of them is that you do not use result of write/read and fwrite/fread.
 I've tried to handle such problems the same way as similar problems
 handled in the same file.
 If you think that they should be handled in different way, let me know and
 I will change this,

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Ticket URL: <http://developer.pidgin.im/ticket/1344>
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