[Pidgin] #1344: fix for some build warnings

[Pidgin]

#1344: fix for some build warnings
----------------------------+-----------------------------------------------
  Reporter:  o_sukhodolsky  |       Owner:  rlaager 
      Type:  patch          |      Status:  assigned
  Priority:  minor          |   Milestone:  2.0.2   
 Component:  pidgin (gtk)   |     Version:  2.0.1   
Resolution:                 |    Keywords:          
   Pending:  0              |  
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Comment (by rlaager):

 I don't think that g_return_if_fail() is acceptable here. Those checks can
 be compiled out. I think this sort of error checking should be done with
 unconditional if statements.
 {{{
 498     +  result = fwrite(data->data, 1, data->len, fp);
 499     +  g_return_if_fail(result == data->len);
 }}}

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Ticket URL: <http://developer.pidgin.im/ticket/1344#comment:3>
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