[Pidgin] #17291: Fix crashes when some external APIs fail

[Pidgin]

#17291: Fix crashes when some external APIs fail
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 Reporter:  Zhouyang  |       Owner:  EionRobb
     Type:  defect    |      Status:  new
Milestone:            |   Component:  unclassified
  Version:  2.12.0    |  Resolution:
 Keywords:  API bugs  |
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Comment (by EionRobb):

 All error messages need to end with \n otherwise they don't split into
 multiple lines (you've put the beeline at the end of a couple of the
 messages but not all)

 Also, this patch would get through faster if you were able to make a pull
 request on our bitbucket repo

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Ticket URL: <https://developer.pidgin.im/ticket/17291#comment:1>
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