[PATCH 3/2] mount: Allow 'port=0' to be a valid port value.

[Steve Dickson <SteveD@redhat.com>]

With the new util-linux, /etc/mtab is now is symbolically linked
to /proc/mounts. In /proc/mounts, the 'port=0' exits which causes
the umount.nfs to error out with the following error:
   umount.nfs: invalid value for 'port=' option

Setting port=0 is a valid value. It just means go out and query
remote rpcbind to get the correct port.

Signed-off-by: Steve Dickson <steved@redhat.com>
---
 utils/mount/network.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/utils/mount/network.c b/utils/mount/network.c
index 8049c1a..88ab222 100644
--- a/utils/mount/network.c
+++ b/utils/mount/network.c
@@ -1346,7 +1346,7 @@ nfs_nfs_port(struct mount_options *options, unsigned long *port)
 	case PO_NOT_FOUND:
 		break;
 	case PO_FOUND:
-		if (tmp >= 1 && tmp <= 65535) {
+		if (tmp >= 0 && tmp <= 65535) {
 			*port = tmp;
 			return 1;
 		}