mark_set_1 fix

[Richard Henderson]

On Thu, Apr 27, 2000 at 05:58:26PM +0100, graham wrote:
> I added a similar patch to my local tree to get the
> bootstrap passed this abort. The only difference was
> my patch checked for (!= REG) rather than (== MEM) 
> because the following code only works for a REG.

A fine distinction, but if we ever find anything but REG or MEM
in there something's gone very wrong.


r~