Add fix for garbage values in `rrd` connector
Add fix for garbage values in `rrd` connector

iaean/facette,githubert/facette,githubert/facette,iaean/facette,facette/facette,githubert/facette,vovkasm/facette,hirocaster/facette,Skrupellos/facette,vovkasm/facette,Skrupellos/facette,facette/facette,iaean/facette,yonglehou/facette,yonglehou/facette,psytra/facette,hirocaster/facette,facette/facette,psytra/facette,vovkasm/facette,facette/facette,Skrupellos/facette,psytra/facette,hirocaster/facette,yonglehou/facette