Currently, mraa_init is called when loading libmraa. This commit adds similar functionality to call mraa_deinit when unloading libmraa. This is a nice-to-have since it makes identifying other memory leaks easier. Signed-off-by: Noel Eck <noel.eck@intel.com> Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>