[client_socket] json parser to_sym for empty string is throwing ArgumentError on 1.8
[client_socket] json parser to_sym for empty string is throwing ArgumentError on 1.8

bf4/sensu,pauloconnor/sensu,javrasya/sensu,cread/sensu,withnale/sensu,m4ce/sensu,yonglehou/sensu,quodlibetor/sensu,upfluence/sensu,sensu/sensu,npe9/sensu,solarkennedy/sensu,rbramwell/sensu,somic/sensu,keymone/sensu,miyakawataku/sensu,portertech/sensu,roobert/sensu,crewton/sensu