making cleanup function name more paranoid (because theoretically functions...

making cleanup function name more paranoid (because theoretically functions live in a global namespace and could collide)

modprobe_old_kernel.sh

@@ -22,7 +22,7 @@ set kernel_pkg                                                                \
 set tempdir (mktemp -d || exit)
 cd $tempdir
 
-function on_exit_rm_tempdir --on-event fish_exit
+function _t-nil__modprobe_old_kernel__on_exit_rm_tempdir --on-event fish_exit
   prevd
   rm -rf $tempdir
 end