[Pidgin] #5379: MSNP15 OIM not always working

[Pidgin]

#5379: MSNP15 OIM not always working
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  Reporter:  tomgr  |       Owner:  khc             
      Type:  patch  |      Status:  reopened        
  Priority:  minor  |   Milestone:  Activate MSNPV14
 Component:  MSN    |     Version:  2.4.1           
Resolution:         |    Keywords:  MSNP15, OIM     
   Pending:  0      |  
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Comment (by qulogic at pidgin.im):

 (In [bf1f69d906e68916d2268b925fcba87b51921096]):[[BR]]
 Fix calculating the response to MSN Challenge strings that are an exact
 multiple of 8 characters long. This seems to happen sporadically when
 sending OIM's.

 Also, clean up the mess that is msn_handle_chl. No more 2-tab indent,
 more consistent whitespace, and broke up some really long lines. Made
 reference to the wiki on imfreedom.org instead of msnpiki, since it's
 newer and I re-wrote it ;)

 References #5379.

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Ticket URL: <http://developer.pidgin.im/ticket/5379#comment:18>
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