Strange crashes in gnuchess fixed.

[Kong Sian]

Hi. I've been spending a lot of time chasing a very elusive bug
which cause gnuchess to crash while thinking. If you have been
experiencing this problem, try the following simple change to
search.c.

Somewhere near line 960 in search.c, there is this line.

g->gmove = -1;

Change this to

g->gmove = 0;

This should get rid of some really weird crashes.

--
Chua Kong Sian <kong...@nsrc.nus.sg>
National Supercomputing Research Centre
Singapore