amlvideosink: send preroll buf only once [1/1]

PD#SWPL-59183

Problem:
send preroll buf to render lib twice

Solution:
send preroll buf only once

Verify:
send preroll buf only once

Change-Id: Ifdb358def8022b5680a41eb7a3587fadafdd2fcf
Signed-off-by: xuesong.jiang <xuesong.jiang@amlogic.com>
1 file changed