ceph: fix possible NULL pointer dereference
ceph: fix possible NULL pointer dereference

This patch fixes 'event_work' dereference before it is checked for NULL.

Signed-off-by: Mariusz Kozlowski <a91dcbb4df49d8bfe0a9930d7ff911a4292ca1f5@lab.zgora.pl>
Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@newdream.net>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas