[Pidgin] #8738: XMPP: Only send XHTML if there is markup

[Pidgin]

#8738: XMPP: Only send XHTML if there is markup
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 Reporter:  darkrain42              |        Owner:  darkrain42
     Type:  patch                   |       Status:  new       
Milestone:  Patches Needing Review  |    Component:  XMPP      
  Version:  2.5.5                   |   Resolution:            
 Keywords:  xhtml                   |  
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Changes (by darkrain42):

  * owner:  malu => darkrain42
  * milestone:  Patches Needing Improvement => Patches Needing Review


Comment:

 Updated the patch (the XHTML is now smiley-fied before we do the
 `jabber_xhtml_plain_equal` call, so any smilies will be noticed as markup)
 and did basic testing.

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Ticket URL: <http://developer.pidgin.im/ticket/8738#comment:5>
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