avoid calling close in dealloc
avoid calling close in dealloc

nlhepler/pysam,TyberiusPrime/pysam,kyleabeauchamp/pysam,bioinformed/pysam,mattions/pysam,pysam-developers/pysam,bioinformed/pysam,daler/pysam,brendanofallon/pysam,mattions/pysam,mattions/pysam,mattions/pysam,mattions/pysam,nlhepler/pysam,brendanofallon/pysam,nlhepler/pysam,carolinux/pysam,carolinux/pysam,daler/pysam,kyleabeauchamp/pysam,dannon/pysam,TyberiusPrime/pysam,daler/pysam,TyberiusPrime/pysam,dannon/pysam,pysam-developers/pysam,pysam-developers/pysam,dannon/pysam,kyleabeauchamp/pysam,TyberiusPrime/pysam,TyberiusPrime/pysam,dannon/pysam,carolinux/pysam,brendanofallon/pysam,nlhepler/pysam,carolinux/pysam,daler/pysam,kyleabeauchamp/pysam,brendanofallon/pysam,bioinformed/pysam,kyleabeauchamp/pysam,bioinformed/pysam,bioinformed/pysam,dannon/pysam,daler/pysam,pysam-developers/pysam,brendanofallon/pysam,carolinux/pysam,nlhepler/pysam