Bug#344896: twinkle doesn't always delete lockfile

[Philipp Klaus Krause]

Package: twinkle
Version: 0.4.2-1+b1

Twinkle only deletes its lockfile ~/.twinkle/twinkle.lck when closed
using the "Quit" entry in the "File" menu.

When I just log off from Gnome or when the X server is killed the
lockfile remains and twinkle will not start again until the file has
been deleted manually.

I have seen the same bug in older twinkle versions, too.

Philipp