Sync to upstream 13ed2b82417b70ecc793dfa9cfd1f42543fa7a0e

Fix 0xD6 bugcheck found with verifier

Signed-off-by: Ben Chalmers <Ben.Chalmers@citrix.com>
Merge pull request #36 from benchalmers/patchq

Sync to upstream 13ed2b82417b70ecc793dfa9cfd1f42543fa7a0e

Approved-By: Ben.Chalmers@citrix.com