Ruby 1.9 can intern empty strings

Since in the subsequent switc we check for nil, explicitly use
nil when the modifier is empty or nil rather than relying on a rescued
exception.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/rbot/core/auth.rb b/lib/rbot/core/auth.rb
index c0234d50..ce21ccc9 100644
--- a/lib/rbot/core/auth.rb
+++ b/lib/rbot/core/auth.rb
@@ -729,7 +729,7 @@ class AuthModule < CoreBotModule
     buname = params[:name]
     return m.reply(_("You can't destroy %{user}") % {:user => buname}) if
            ["everyone", "owner"].include?(buname)
-    mod = params[:modifier].to_sym rescue nil
+    mod = params[:modifier].nil_or_empty? ? nil : params[:modifier].to_sym
 
     buser_array = @bot.auth.save_array
     buser_hash = buser_array.inject({}) { |h, u|