freebsd-update: cannot open patchlist

[Randy Bush]

>> # freebsd-update upgrade -r 11.1-RELEASEa
> 
> you probably noticed the moment you hit the send button, but in case
> you didn't: Try to update to 11.1-RELEASE instead of 11.1-RELEASEa

typo after paste

# history | grep upgrade
   53  freebsd-update upgrade -r 11.1-RELEASE
   58  history | grep upgrade

and i now have the problem on two out of four systems i am upgrading.
all currently 10.3-RELEASE-p24 trying to go to 11.1

randy