Build finger(1) with WARNS=6.

usr.bin/finger/Makefile

@@ -5,6 +5,4 @@ PROG=	finger
 SRCS=	finger.c lprint.c net.c sprint.c util.c
 MAN=	finger.1 finger.conf.5
 
-WARNS?=	2
-
 .include <bsd.prog.mk>

usr.bin/finger/lprint.c

@@ -306,7 +306,7 @@ show_text(const char *directory, const char *file_name, const char *header)
 		return(0);
 
 	/* If short enough, and no newlines, show it on a single line.*/
-	if (sb.st_size <= LINE_LEN - strlen(header) - 5) {
+	if (sb.st_size <= (off_t)(LINE_LEN - strlen(header) - 5)) {
 		nr = read(fd, tbuf, sizeof(tbuf));
 		if (nr <= 0) {
 			(void)close(fd);