Merge pull request #3112 from xiaoxichen/cleanup_getheader

Cleanup:Use get_type()instead of get_header().type

Reviewed-by: Loic Dachary <ldachary@redhat.com>

diff --cc src/osd/OSD.cc
Simple merge

diff --cc src/osd/PG.cc
Simple merge

diff --cc src/osd/ReplicatedPG.cc
Simple merge