[automerger] MPEG4Source: fix fragmented read. am: 5c57e911 am: 7445f0e4...

[automerger] MPEG4Source: fix fragmented read. am: 5c57e911 am: 7445f0e4 am: ab9bfb83 am: da2d2587 am: ca0bd109 am: 442d5ba7 am: fb86876c am: 6810ac8b am: 1338d42a am: c8effca2 am: db302468 am: e118a115 am: 942bb16c am: 95bdcbe9 am: eeff5c9c am: 13fcec1c am: b0926c2d
am: 9e933623

Change-Id: I541b5106a8a2af539c893abfbc5351af156179f5