GFS2: Add initialization for address space in super block

Spotted by Andy Price. This should fix the odd messages from
lockdep caused by 70d4ee94b370c5ef54d0870600f16bd92d18013c

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Andrew Price <anprice@redhat.com>
1 file changed