[Pidgin] #16545: Pidgin doesn't include 'xmlns' attribute with 'iq' request

[Pidgin]

#16545: Pidgin doesn't include 'xmlns' attribute with 'iq' request
----------------------+--------------------------
 Reporter:  yurivict  |      Owner:  EionRobb
     Type:  defect    |     Status:  new
Milestone:            |  Component:  unclassified
  Version:  2.10.11   |   Keywords:
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 The 'iq' request comes like this:
 {{{
 <iq type='set' id='purple35ba3ede'>
 }}}

 While one may think that 'iq' should be assumed to to have 'jabber:client'
 namespace and there is no need to include it, this essentially requires
 this piece of knowledge encoded into the server just to handle this
 situation. Because XMPP is otherwise extendable protocol based on 'xmlns'
 attribute.

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Ticket URL: <https://developer.pidgin.im/ticket/16545>
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