xfstests: kill in 131 needs to be quiet

If the kill fails because the processes have already terminates,
the output from kill (no such process) will cause the test to
fail. Make sure kill doesn't output anything.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

131

@@ -34,8 +34,8 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 
 _cleanup()
 {
-    kill $locktest_pid2
-    kill $locktest_pid1
+    kill $locktest_pid2 2&>1 /dev/null
+    kill $locktest_pid1 2&>1 /dev/null
     _cleanup_testdir
 }