osd/ReplicatedPG: fix leak of RepGather on large-object COPY_FROM

new_repop() gives us a ref; we need to release it, just as we do in
execute_ctx().

Signed-off-by: Sage Weil <sage@inktank.com>
osd/ReplicatedPG: fix leak of RepGather on watch timeout

new_repop() gives us a ref; we need to release it, just as we do in
execute_ctx().

Backport: dumpling
Signed-off-by: Sage Weil <sage@inktank.com>
Merge pull request #633 from ceph/wip-repop-leaks

fix a copule of leaks of RepGather structs

Reviewed-by: David Zafman <david.zafman@inktank.com>