problem with fullheight for inital window

[MelloBob]

I've been using this in my .emacs file for years to set up the initial window 
size:

   (setq default-frame-alist '((width . 110) (height . fullheight) ))

I think it's due to a recent OS update (Ubuntu to 17.04 and XFCE4), but now the 
window is 1 line too tall and the bottom buffer is cut off. Suggestions on how 
to fix this would be appreciated.