Uniformly use the same underlying htslib function, wouldn't compile under htslib < 1.4 otherwise. Shouldn't make a difference in terms of performance, as noted in the comments.
Uniformly use the same underlying htslib function, wouldn't compile
under htslib < 1.4 otherwise. Shouldn't make a difference in terms
of performance, as noted in the comments.

Ensembl/Bio-HTS,Ensembl/Bio-HTS,Ensembl/Bio-HTS