debugfs: fix crash in ea_set argument handling

Fix an incorrect check in ea_set that would crash debugfs if someone
runs 'ea_set / foo.bar' (i.e. with no value argument)

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
1 file changed