Use an ANSI-C function definition rather than a

K&R one to avoid a warning.

usr.bin/biff/biff.c

@@ -56,9 +56,7 @@ __FBSDID("$FreeBSD$");
 static void usage(void);
 
 int
-main(argc, argv)
-	int argc;
-	char *argv[];
+main(int argc, char *argv[])
 {
 	struct stat sb;
 	int ch;