[Pidgin] #2932: irc fails if hostname is empty

[Pidgin]

#2932: irc fails if hostname is empty
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 Reporter:  kingwalterii  |       Type:  defect
   Status:  new           |   Priority:  minor 
Component:  libpurple     |    Version:  2.1.1 
 Keywords:                |    Pending:  0     
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 If hostname is not set the irc plugin fails to login, as the user command
 has an invalid number of parameters, without giving a clear error

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Ticket URL: <http://developer.pidgin.im/ticket/2932>
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