rot13: convert result to string

When core.reply_with_nick is active, m.reply expects the argument to be a
String. Do the conversion explicitly.

1 files changed, 1 insertions, 1 deletions

diff --git a/data/rbot/plugins/rot13.rb b/data/rbot/plugins/rot13.rb
index 36155962..41767726 100644
--- a/data/rbot/plugins/rot13.rb
+++ b/data/rbot/plugins/rot13.rb
@@ -18,7 +18,7 @@ class RotPlugin < Plugin
   end
 
   def rot13(m, params)
-    m.reply @bot.filter(:rot13, params[:string].to_s)
+    m.reply @bot.filter(:rot13, params[:string].to_s).to_s
   end
 end
 plugin = RotPlugin.new