[kudu-CR] tablet copy: Fix tidy warnings in TabletCopySourceSession{Test}

Mike Percy has submitted this change and it was merged. Change subject: tablet copy: Fix tidy warnings in TabletCopySourceSession{Test} .. tablet copy: Fix tidy warnings in TabletCopySourceSession{Test} Done as a follow-up

[kudu-CR] tablet copy: Fix tidy warnings in TabletCopySourceSession{Test}

Hello Dinesh Bhat, I'd like you to do a code review. Please visit http://gerrit.cloudera.org:8080/5257 to review the following change. Change subject: tablet copy: Fix tidy warnings in TabletCopySourceSession{Test} ..