[Pidgin] #7687: Perl Purple::Prefs::add_string_list drops the last item when initializing

[Pidgin]

#7687: Perl Purple::Prefs::add_string_list drops the last item when initializing
--------------------+-------------------------------------------------------
Reporter:  samwyse  |        Type:  defect 
  Status:  new      |   Component:  plugins
 Version:  2.5.2    |    Keywords:         
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 I added this code to the plugin_load routine of the Perl example plugin:
 {{{
    Purple::Prefs::add_string_list(
         "/plugins/core/perl_test/my_stringlist",
                 [qw/ one two three four five /]);
 }}}
 After restarting Pidgin and enabling the plugin, I looked in the prefs.xml
 file and found this:
 {{{
 <pref name='perl_test'>
         <pref name='my_stringlist' type='stringlist'>
                 <item value='one'/>
                 <item value='two'/>
                 <item value='three'/>
                 <item value='four'/>
         </pref>
 </pref>
 }}}
 This happens consistently with lists of various lengths.  Lists of zero or
 one items create the same empty list in the XML file.

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Ticket URL: <http://developer.pidgin.im/ticket/7687>
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