Comment 7 for bug 740614

Attached is a debdiff that fixes the crash. It's low risk patch for the patch, I've backported from upstream two changes - added another check in tr_sessionGetPublicAddress that guards against empty bindinfo and replaced strcmp with tr_strcmp0 which guards against other possible crash - basically checks if both str1 and str2 are not NULL.

Although the crash so far hasn't been affecting many people, and happens only when application is being closed it did already gather few duplicatesso I'd like to request an approval to upload it before Beta1.