Fix to deal with absent qual values in fastq file.
Fix to deal with absent qual values in fastq file.
benedictpaten/sonLib,adderan/sonLib,adderan/sonLib,adderan/sonLib,benedictpaten/sonLib,benedictpaten/sonLib,adderan/sonLib,benedictpaten/sonLib,benedictpaten/sonLib,adderan/sonLib