force fixable

	* complex.c (nucomp_hash): force hash values fixable.
	  [ruby-core:85224] [Bug #14420]

	* rational.c (nurat_hash): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62877 b2dd03c8-39d4-4d8f-98ff-823fe69b080e