Test case fixed by htslib change
Test case fixed by htslib change

With commit samtools/htslib@191be31519d7deed15c96363ce10a386513c87aa
this test now succeeds again.  The htslib commit also silences the
bogus warnings; fixes #150.

mcshane/samtools,mcshane/samtools,mcshane/samtools,mcshane/samtools,mcshane/samtools,mcshane/samtools