added error handling for too-short reads
added error handling for too-short reads

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