(MAXCOST): Use `(unsigned long)1' rather than `(COST)1'

so the left operand of the << isn't signed.
From Kjetil Torgrim Homme.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/fmt.c b/src/fmt.c
index 6c7b569ce..f24df5d85 100644
--- a/src/fmt.c
+++ b/src/fmt.c
@@ -65,7 +65,7 @@
 
 typedef long COST;
 
-#define	MAXCOST	(~(((COST) 1) << (8 * sizeof (COST) -1)))
+#define	MAXCOST	(~(((unsigned long) 1) << (8 * sizeof (COST) -1)))
 
 #define	SQR(n)		((n) * (n))
 #define	EQUIV(n)	SQR ((COST) (n))