gst-amlvideosink: unref clock after got mediasync iid [1/1]

PD#SWPL-85180

Problem:
audio can't destroy clock due to amvideosink ref this clock

Solution:
do unref after got mediasync iid

Verify:
(detail info)

Change-Id: If650eed94a2ae71882565b34f5267e10d2d62d80
Signed-off-by: xuesong.jiang <xuesong.jiang@amlogic.com>
1 file changed