note: dup the keys, not the registry

diff --git a/data/rbot/plugins/note.rb b/data/rbot/plugins/note.rb
index 59e1e6a0a175adbcc39a318c66fada8e850d86a6..e0a7be293a05a192375e4aed7e03cebe72ad347c 100644 (file)
--- a/data/rbot/plugins/note.rb
+++ b/data/rbot/plugins/note.rb
@@ -21,7 +21,7 @@ class NotePlugin < Plugin
     return if @registry.length < 1
     debug 'Checking registry for old-formatted notes...'
     n = 0
-    @registry.dup.each_key do |key|
+    @registry.keys.each do |key|
       unless key == key.downcase
         @registry[key.downcase] = @registry[key] + (@registry[key.downcase] || [])
         @registry.delete key