(expt 2 -inf.0) fails in 1.9.4

[Daniel Llorens]

This is from git, 8aa47f2…

> (expt 2 -inf.0)
ERROR: In procedure integer-expt:
ERROR: Wrong type argument in position 2: -inf.0

These do work:

> (expt 2. -inf.0)
$1 = 0.0
> (expt 1 -inf.0)
$2 = 1

Regards,

        Daniel