avsync: CB2 reset audio switch when do seek [1/1]

PD#KAR-1260

Problem:
do seek when audio switching, audio can not start

Solution:
when video destroy avsync, reset audio switch in msync

Verify:
KARMAR

Signed-off-by: le.han <le.han@amlogic.com>
Change-Id: Ib4ebdc3009f45361e0dddacf7e6c12901ad06a17
diff --git a/src/avsync.c b/src/avsync.c
index 93fb27e..cf9c8ee 100644
--- a/src/avsync.c
+++ b/src/avsync.c
@@ -485,8 +485,12 @@
         return;
     }
     log_info("[%d]begin type %d", avsync->session_id, avsync->type);
-    if (avsync->type == AV_SYNC_TYPE_VIDEO)
+    if (avsync->type == AV_SYNC_TYPE_VIDEO) {
+        if (msync_session_set_audio_switch(avsync->fd, false)) {
+            log_error("[%d]fail to set audio switch false", avsync->session_id);
+        }
         internal_stop(avsync);
+    }
 
     avsync->quit_poll = true;
     if (avsync->poll_thread) {