Protect against no Content-Type given.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1562423 13f79535-47bb-0310-9956-ffa450edef68
Remove commented (and incorrect) code.

git-svn-id: https://svn.apache.org/repos/asf/jena/trunk@1562424 13f79535-47bb-0310-9956-ffa450edef68