Fix bug where invalid read would be skipped if encountered at EOF.
Fix bug where invalid read would be skipped if encountered at EOF.

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