fix SURVIVOR stalls when reference FASTA lacks newlines
fix SURVIVOR stalls when reference FASTA lacks newlines

aquaskyline/10xReadsSimulator,aquaskyline/10xReadsSimulator,aquaskyline/10xReadsSimulator,aquaskyline/10xReadsSimulator,aquaskyline/10xReadsSimulator,aquaskyline/10xReadsSimulator,aquaskyline/10xReadsSimulator,aquaskyline/10xReadsSimulator