Fixes indentation

Author: ckdake

lib/setler/settings.rb

@@ -65,7 +65,7 @@ def self.[]=(var, value)
 
     def self.destroy(var_name)
       var_name = var_name.to_s
-  if (setting = self.find_by_var(var_name))
+      if (setting = self.find_by_var(var_name))
         setting.destroy
         true
       else