From 208adb6403e079ceeb8e731696615d22db6f397b Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 10 Dec 2013 19:48:58 -0500
Subject: [PATCH] qnx4: clean qnx4_fill_super() up

* pass on-disk superblock to qnx4_chkroot() explicitly
* don't leave stale (and unused) pointers in qnx4_super_block
* free stuff in ->kill_sb(); ->put_super() becomes empty and dies
* simplify failure exits

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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