added ternary to remove useless warning under -w switch
added ternary to remove useless warning under -w switch

at7/ensembl,muffato/ensembl,mjg17/ensembl,danstaines/ensembl,mjg17/ensembl,muffato/ensembl,muffato/ensembl,Ensembl/ensembl,willmclaren/ensembl,Ensembl/ensembl,danstaines/ensembl,muffato/ensembl,james-monkeyshines/ensembl,willmclaren/ensembl,mjg17/ensembl,james-monkeyshines/ensembl,danstaines/ensembl,mjg17/ensembl,at7/ensembl,at7/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,at7/ensembl,Ensembl/ensembl,james-monkeyshines/ensembl