move method is missing a 'retreat' case

[rpherbig]

[bescort]>northwest
You need to retreat out of combat first!
>
[snip some unrelated lines]
>
[bescort: move: no recognized response in 30 seconds.  giving up.]
>
[bescort]>north
You are engaged to a forest geni at melee range!
>
[bescort]>retreat
You retreat back to pole range.

The "You need to retreat out of combat first!" text isn't handled in def move in lich.rbw.