Staging: lustre: llite: llite_lib: remove unneeded null test before free

Kfree can cope with a null argument, so drop null tests.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@ expression ptr; @@

- if (ptr != NULL)
  kfree(ptr);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/llite/llite_lib.c

@@ -574,9 +574,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 		get_uuid2fsid(uuid->uuid, strlen(uuid->uuid), &sbi->ll_fsid);
 	}
 
-	if (data != NULL)
 	kfree(data);
-	if (osfs != NULL)
 	kfree(osfs);
 
 	return err;
@@ -595,9 +593,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
 	obd_disconnect(sbi->ll_md_exp);
 	sbi->ll_md_exp = NULL;
 out:
-	if (data != NULL)
 	kfree(data);
-	if (osfs != NULL)
 	kfree(osfs);
 	lprocfs_unregister_mountpoint(sbi);
 	return err;