[PATCH] Don't crash if connections fail and treeXX variables are left as NULL.

[Ralph Böhme]

On Thu, Jul 21, 2016 at 02:22:59PM -0700, Jeremy Allison wrote:
> Found whilst debugging the make test problems with
> turning on leases by default.
> 
> Please review and push if OK.

lgtm&pushed.

Cheerio!
-slow