removing useless assingment

activerecord/lib/active_record/relation/query_methods.rb

@@ -285,7 +285,7 @@ def order!(*args) # :nodoc:
       references!(references) if references.any?
 
       # if a symbol is given we prepend the quoted table name
-      args = args.map! { |arg|
+      args.map! { |arg|
         arg.is_a?(Symbol) ?
           Arel::Nodes::Ascending.new(klass.arel_table[arg]) :
           arg