Fix for segfault when parsing dcap:///
Merge pull request #2 from ellert/master

dcap segfaults on "dccp dcap:/// x"

Signed-off-by: Mattias Ellert <mattias.ellert@fysast.uu.se>
Acked-by: Gerd Behrmann <behrmann@nordu.net>
Require-notes: yes
Require-book: no