Merge pull request #10241 from Yan-waller/yj-wip-rgwrests3-0710

rgw: add return value checking to avoid possible subsequent `parse` exception

Reviewed-by: Abhishek Lekshmanan <abhishek@suse.com>
Reviewed-by: Yehuda  Sadeh <yehuda@redhat.com>

diff --cc src/rgw/rgw_rest.cc
Simple merge

diff --cc src/rgw/rgw_rest_s3.cc
Simple merge