respond_to? returns true for :to_ary, but call of :to_ary raises NoMethodError
Created by: mikdiet
fixed bug, when respond_to? returns true for method :to_ary, and then, when this method calls, raise NoMethodError. For example, at this point: https://github.com/rails/rails/blob/v3.0.8/activesupport/lib/active_support/core_ext/array/wrap.rb#L43