ircbot: don't unload just one plugin of path

if we somehow got multiple plugins of the same path loaded, unload them
all when unloading, not just the first one we find

dr_botzo/ircbot/bot.py

@@ -646,18 +646,19 @@ class IRCBot(irc.client.SimpleIRCClient):
 
         dest = ircbotlib.reply_destination_for_event(event)
 
+        unloaded = False
         for path, plugin in self.plugins:
             if plugin_path == path:
+                unloaded = True
                 self.plugins.remove((path, plugin))
                 plugin.stop()
                 del plugin
                 del sys.modules[plugin_path]
 
                 self.privmsg(dest, "Plugin '{0:s}' unloaded.".format(plugin_path))
-                return
 
-        # guess it was never loaded
-        self.privmsg(dest, "Plugin '{0:s}' is not loaded.".format(plugin_path))
+        if not unloaded:
+            self.privmsg(dest, "Plugin '{0:s}' is not loaded.".format(plugin_path))
 
     def privmsg(self, target, text):
         """Send a PRIVMSG command.