Fix graph legend when data is missing.
Fix graph legend when data is missing.

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