hapLrt: Initialize sum when calculating mean.
hapLrt: Initialize sum when calculating mean.

vcflib/vcflib,ekg/vcflib,vcflib/vcflib,ekg/vcflib,ekg/vcflib,vcflib/vcflib,vcflib/vcflib,vcflib/vcflib,vcflib/vcflib,ekg/vcflib,ekg/vcflib,vcflib/vcflib,vcflib/vcflib