[Pidgin] #4332: Crash in out_cmd when "OUT" command's params are NULL.

[Pidgin]

#4332: Crash in out_cmd when "OUT" command's params are NULL.
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  Reporter:  tedp    |       Owner:  QuLogic
      Type:  defect  |      Status:  new    
  Priority:  minor   |   Milestone:         
 Component:  MSN     |     Version:  2.3.1  
Resolution:          |    Keywords:         
   Pending:  0       |  
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Comment (by qulogic at pidgin.im):

 (In [95fe62719d362e8857a89e906a9008305e31dd5e]):[[BR]]
 When receiving an MSN OUT, don't try to dereference cmd->params when
 cmd->param_count is zero.

 References #4332.

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Ticket URL: <http://developer.pidgin.im/ticket/4332#comment:2>
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