[PATCH] (resend) show-diff.c off-by-one fix

The patch to introduce shell safety to show-diff has an
off-by-one error.  Here is an fix.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

show-diff.c

@@ -27,8 +27,8 @@ static char *sq_expand(char *src)
 	int cnt, c;
 	char *cp;
 
-	/* count single quote characters */ 
-	for (cnt = 0, cp = src; *cp; cnt++, cp++)
+	/* count bytes needed to store the quoted string. */ 
+	for (cnt = 1, cp = src; *cp; cnt++, cp++)
 		if (*cp == '\'')
 			cnt += 3;