[xmonad] darcs patch: Fix possible head []

7 Jan 2009

      Hi,

there are not many places where head is used in xmonad, but this is one of
them. Time to make it safe.

Greetings,
Joachim

Tue Jan  6 20:20:26 CET 2009  Joachim Breitner <mail@joachim-breitner.de>
  * Fix possible head []
  This seems to be a rare case, but I just got hit by it.