fixed minor error pointed out by QP
fixed minor error pointed out by QP

Winterflower/khmer,jas14/khmer,jas14/khmer,souravsingh/khmer,ged-lab/khmer,F1000Research/khmer,Winterflower/khmer,ged-lab/khmer,ged-lab/khmer,kdmurray91/khmer,kdmurray91/khmer,F1000Research/khmer,kdmurray91/khmer,souravsingh/khmer,jas14/khmer,F1000Research/khmer,souravsingh/khmer,Winterflower/khmer