AutoMode: Fix traceback since b5c99b1c.

plugins/AutoMode/plugin.py

@@ -52,6 +52,7 @@ class AutoMode(callbacks.Plugin):
         fallthrough = self.registryValue('fallthrough', channel)
         def do(type):
             cap = ircdb.makeChannelCapability(channel, type)
+            try:
                 if ircdb.checkCapability(msg.prefix, cap,
                         ignoreOwner=not self.registryValue('owner')):
                     if self.registryValue(type, channel):
@@ -65,6 +66,8 @@ class AutoMode(callbacks.Plugin):
                                        ' is not enabled in %s, refusing to fall '
                                        'through.', msg.prefix, cap, type, channel)
                         raise Continue
+            except KeyError:
+                pass
         def schedule_msg(msg):
             def f():
                 irc.queueMsg(msg)