Update Issue 146

JSIP Issue JSIP-479

fix + non regression test

(cherry picked from commit 01d077aefe5ce87622081bea8196c98fd6e2581b)

git-svn-id: https://svn.java.net/svn/jsip~svn/trunk@2342 8e71dc83-d81e-6649-80f2-80b843a9b2be