amlv4l2dec: CB2 crash when seek [1/1]

PD#SWPL-130031

Problem:
access null point when acquire buffer fail

Solution:
only process buffer when acquire buffer success

Verify:
ap222

Change-Id: Ic19d677453cd8934861adbdc0ec98632a3e99d65
Signed-off-by: fei.deng <fei.deng@amlogic.com>
1 file changed