Avoid crash for stss sync sample number 0 am: 5c364997a3 am: e77a32bd3d am: ab28d49e41  -s ours am: 73db408aa3 am: 0bb0a8e1e8 am: 4d86bef7f7 am: 241f5feb8a am: a7cec6180f am: d022170614 am: cbdc2b7899 am: c9f14c3442 am: 08bb4c4a5b am: f3bab7a1de am: 79f18237f6 am: 143d1a1535
am: ab00350dc4

Change-Id: Ib17cfd36191066dfbece3a1e0d4d7b2f449602fa