==10823== 13 bytes in 1 blocks are definitely lost in loss record 3 of 5
==10823==    at 0x4C2DB8F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10823==    by 0x40E4B3: fai_retrieve.isra.3 (faidx.c:436)
==10823==    by 0x4119A4: fai_fetch (faidx.c:539)
==10823==    by 0x40BE72: hts::fetch_seq_rname(__faidx_t*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, int*, hts::strand_checker_t const&, seq::GeneticTable const&) (hts_handler.cpp:116)
==10823==    by 0x407E36: dnasreg::DnaStrandedRegion::oriented_sequence[abi:cxx11](__faidx_t*, seq::GeneticTable const&) (DnaStrandedRegion.hpp:101)
==10823==    by 0x4065C6: main (test_dnastrandedregion.cpp:136)