osd: fix misuses of OLOC_BLANK
osd: fix misuses of OLOC_BLANK

Commit 6e2b594b fixed a bunch of bad get_object_context() calls, but even
with the parameter fixed some were still broken.  Pass in a valid oloc in
those cases.  The only places where OLOC_BLANK _is_ still uses is when we
know we have the object locally and will load a valid value off disk.

Signed-off-by: Sage Weil <6dd34506bbd5e58221bbb3e4732d97c91f02277b@newdream.net>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph