audio: Fixed memory leak during dts playback [2/2]

PD#SWPL-189452

Problem:
memory leak during dts playback.

Solution:
1. fixed memory leak;
2. add memory leak detection module for dts lib;

Verify:
yocto

Change-Id: I0480cd3bd1810384510d707cc0eca92a6d3f2ba1
Signed-off-by: haiyang.ren <haiyang.ren@amlogic.com>
2 files changed