Fixed regression to convert blank value at r45497.
[Bug #11126][ruby-core:69088]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59643 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Fixed regression to convert blank value at r45497.
[Bug #11126][ruby-core:69088]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59643 b2dd03c8-39d4-4d8f-98ff-823fe69b080e