Close a playlist session.
#include <mm/mmplaylist.h>
int mmplaylist_close( mmplaylist_t *pl )
Close an active playlist session. If an error occurs, the function returns an error code but the session handle still becomes invalid. The application should not, under any circumstances, use the handle after calling this function.
0 (mmplaylist_ok) on success
A nonzero mmplaylist_rc error code on failure