Handle unlikely case in which read is zero length properly -- set to zero-length byte[] rather than null.
Handle unlikely case in which read is zero length properly -- set to zero-length byte[] rather than null.

broadinstitute/picard,alecw/picard,broadinstitute/picard,nh13/picard,annkupi/picard,nh13/picard,annkupi/picard,nh13/picard,alecw/picard,broadinstitute/picard,alecw/picard,annkupi/picard,broadinstitute/picard,nh13/picard,annkupi/picard,broadinstitute/picard,alecw/picard