[PATCH] xfstests: fix error discard test output in 251.out.

[Tao Ma <tm@xxxxxx>]

From: Tao Ma <boyu.mt@xxxxxxxxxx>

I don't know why, but discard tests is 251 in xfs,
but 251.out has number of 248 in it, So it fails.
Change it to 251 now.

Cc: Lukas Czerner <lczerner@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Alex Elder <aelder@xxxxxxx>
Signed-off-by: Tao Ma <boyu.mt@xxxxxxxxxx>
---
 251.out |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/251.out b/251.out
index 880d9c7..3017b5e 100644
--- a/251.out
+++ b/251.out
@@ -1,3 +1,3 @@
-QA output created by 248
+QA output created by 251
 Checking FITRIM support: done.
 Running the test: done.
-- 
1.6.3.GIT