Fixed memory leak in the decoding of BZIP2 and ARITH/RANS[01] codecs.


git-svn-id: svn://svn.code.sf.net/p/staden/code/io_lib@3637 ba6f2710-ca9f-427c-89d3-5bf716dbc8e1
Removed small memory leak in cram_dependent_data_series(), triggered
when requesting only a subset of the data. (Ie scram_flagstat and
cram_index in some scenarios.)


git-svn-id: svn://svn.code.sf.net/p/staden/code/io_lib@3638 ba6f2710-ca9f-427c-89d3-5bf716dbc8e1