[Pidgin] #5219: oscar_normalize crashes when normalize string

[Pidgin]

#5219: oscar_normalize crashes when normalize string
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  Reporter:  emilal        |       Owner:  lschiere     
      Type:  defect        |      Status:  new          
  Priority:  minor         |   Milestone:               
 Component:  unclassified  |     Version:  2.4.0        
Resolution:                |    Keywords:  Oscar crashes
   Pending:  1             |  
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Changes (by datallah):

  * pending:  0 => 1

Comment:

 The problem is that a non-utf8 string is being passed to
 `g_utf8_normalize()`, so it returns NULL.  It shouldn't ever happen that a
 non-utf8 string would get that far - is this with pidgin or another
 libpurple client? Where does that string come from?  What does the rest of
 the backtrace look like?

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Ticket URL: <http://developer.pidgin.im/ticket/5219#comment:1>
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