[mcclim-devel] little patch when using clx+MacOSX

Hi there I'm running SBCL 0.9, with telent clx 0.7, on Mac OS X.4, with Apple's X11, mcclim from CVS. In order to run the demos, I had to make the attached change. When $DISPLAY is not set, (get-environment-variable "DISPLAY") returns NIL, and thus a condition is raised when calling (POSITION #\/ NIL) in the next form. nicolas