hpfs: get rid of bitfields in struct fnode

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c
index 2fa0089..b8472f8 100644
--- a/fs/hpfs/dir.c
+++ b/fs/hpfs/dir.c
@@ -87,7 +87,7 @@
 			ret = -EIOERROR;
 			goto out;
 		}
-		if (!fno->dirflag) {
+		if (!fnode_is_dir(fno)) {
 			e = 1;
 			hpfs_error(inode->i_sb, "not a directory, fnode %08lx",
 					(unsigned long)inode->i_ino);