Aka: Fix import of locked alias.

plugins/Aka/plugin.py

@@ -476,7 +476,7 @@ class Aka(callbacks.Plugin):
             except AkaError as e:
                 errors[name] = e.args[0]
             else:
-                alias_plugin.removeAlias(name)
+                alias_plugin.removeAlias(name, evenIfLocked=True)
         if errors:
             irc.error(format(_('Error occured when importing the %n: %L'),
                 (len(errors), 'following', 'command'),

plugins/Aka/test.py

@@ -197,6 +197,7 @@ class AkaTestCase(PluginTestCase):
 
         self.assertNotError('alias add foo "echo test"')
         self.assertNotError('alias add spam "echo egg"')
+        self.assertNotError('alias lock spam')
 
         self.assertRegexp('aka importaliasdatabase',
             r'the 1 following command: foo \(This Aka already exists.\)$')