[src/trunk]: src/usr.bin/vndcompress Fix sign-compare in compress_blocks.

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/84d6e314e87c
branches:  trunk
changeset: 786632:84d6e314e87c
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sat May 04 14:29:48 2013 +0000

description:
Fix sign-compare in compress_blocks.

Not sure why my builds didn't reveal this one -- they revealed
several others during development.

diffstat:

 usr.bin/vndcompress/vndcompress.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 6b7b994daae0 -r 84d6e314e87c usr.bin/vndcompress/vndcompress.c
--- a/usr.bin/vndcompress/vndcompress.c Sat May 04 10:21:27 2013 +0000
+++ b/usr.bin/vndcompress/vndcompress.c Sat May 04 14:29:48 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vndcompress.c,v 1.9 2013/05/04 10:21:27 joerg Exp $    */
+/*     $NetBSD: vndcompress.c,v 1.10 2013/05/04 14:29:48 riastradh Exp $       */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: vndcompress.c,v 1.9 2013/05/04 10:21:27 joerg Exp $");
+__RCSID("$NetBSD: vndcompress.c,v 1.10 2013/05/04 14:29:48 riastradh Exp $");
 
 #include <sys/endian.h>
 
@@ -792,7 +792,7 @@
                err(1, "read block %"PRIu32, blkno);
        assert(n_read >= 0);
        assert((uintmax_t)n_read <= (uintmax_t)readsize);
-       if (n_read < readsize)
+       if ((uint32_t)n_read < readsize)
                errx(1, "partial read of block %"PRIu32": %zd <= %"PRIu32,
                    blkno, n_read, readsize);