Fix wrong use of @method in Kernel#Complex spec
Fix wrong use of @method in Kernel#Complex spec

* @method will not be set in such a case.

eregon/rubyspec,ruby/rubyspec,ruby/spec,eregon/rubyspec,ruby/spec,nobu/rubyspec,nobu/rubyspec,eregon/rubyspec,nobu/rubyspec,ruby/rubyspec,ruby/spec