andrewlewis bf495de529 Fix mdta handling on I/O error
An I/O error could occur while handling the start of an mdta box, in
which case retrying would cause another ContainerAtom to be added. Fix
this by skipping the mdta header before updating container atoms.

PiperOrigin-RevId: 284000715
2019-12-06 19:20:36 +00:00
..
2019-12-06 19:20:36 +00:00