cifs, msdos, vfat, hfs+: don't bother with parent in ->d_compare()

dentry->d_sb is just as good as parent->d_sb

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/hpfs/dentry.c b/fs/hpfs/dentry.c
index 60e6d33..a804300 100644
--- a/fs/hpfs/dentry.c
+++ b/fs/hpfs/dentry.c
@@ -50,7 +50,7 @@
 
 	if (hpfs_chk_name(name->name, &bl))
 		return 1;
-	if (hpfs_compare_names(parent->d_sb, str, al, name->name, bl, 0))
+	if (hpfs_compare_names(dentry->d_sb, str, al, name->name, bl, 0))
 		return 1;
 	return 0;
 }