Move slice increments after completing header parsing am: dc110841d6 am: 9ab629f2b2 am: 2a1fd9a360 am: d2fa8b5c63 am: eff1d4e7cb am: 6515f7103d

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libavc/+/16407185

Change-Id: I0692763c52495cbdfb98508f61504b717c3173f1