cifsd: fix WARNING: Too many leading tabs

WARNING: Too many leading tabs - consider code refactoring
3066: FILE: fs/cifsd/smb2pdu.c:2733:
+                                               if (fattr.cf_dacls)

Fix a warning from checkpatch.pl.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>