Readline init broke on master

[Mike Gran]

Hi-

If I start up an interactive session with the current master, and I
enter the following three lines at the prompt

(use-modules (ice-9 readline))<CR>
(activate-readline)<CR>
<CR>
 
I get an infinite loop of 

ERROR: Wrong number of arguments to #<program 9dfdee0
at /usr/local/share/guile/1.9/ice-9/readline.scm:210:14 (repl-prompt)>

Thanks,

Mike