Extraneous assignment in rev(1)

[Bill Marquette]

This was noticed in openbsd by bret.lambert at gmail.com, but it looks
like DragonFly uses the same code.
Index: usr.bin/rev/rev.c
===================================================================
RCS file: /home/dcvs/src/usr.bin/rev/rev.c,v
retrieving revision 1.6
diff -u -r1.6 rev.c
--- usr.bin/rev/rev.c	14 Dec 2004 18:22:09 -0000	1.6
+++ usr.bin/rev/rev.c	4 Jul 2006 21:48:05 -0000
@@ -95,7 +95,6 @@
 	while ((p = fgetln(fp, &len)) != NULL) {
 			if (p[len - 1] == '\n')
 				--len;
-			t = p + len - 1;
 			for (t = p + len - 1; t >= p; --t)
 				putchar(*t);
 			putchar('\n');