Code review comment for lp:~johnjay/ubuntu/trusty/djmount/fix-segfault-1322813

This is intended to mirror the 0.71-7 version available for the later ubuntu releases. As far as I'm aware they have the same codebase, so I'm not sure if there's a more direct way to do this (I pulled out the trusty version and applied the patch, wrote the new commit message etc, rather than pull in the other commit directly if that makes sense in bazaar).