Fix return to be C++11 compatible.
Fix return to be C++11 compatible.

marsupial/cling,root-mirror/cling,root-mirror/cling,karies/cling,marsupial/cling,root-mirror/cling,karies/cling,root-mirror/cling,karies/cling,karies/cling,marsupial/cling,karies/cling,marsupial/cling,marsupial/cling,karies/cling,marsupial/cling,root-mirror/cling,root-mirror/cling