[Pidgin] #13136: Segfault with unexpected jingle transport type

[Pidgin]

#13136: Segfault with unexpected jingle transport type
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 Reporter:  nikita                             |        Owner:  darkrain42     
     Type:  patch                              |       Status:  new            
Milestone:  2.7.10                             |    Component:  Voice and Video
  Version:  2.7.9                              |   Resolution:                 
 Keywords:  jingle invalid transport segfault  |  
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Comment(by darkrain42):

 This patch is mostly correct.  `xmlnode_get_namespace` can return NULL, so
 that needs to be handled (preferably in `jingle_get_type`)

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Ticket URL: <http://developer.pidgin.im/ticket/13136#comment:5>
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