Mp4: fixed reading 64-bit atoms.

Previously there was no validation for the size of a 64-bit atom
in an mp4 file.  This could lead to a CPU hog when the size is 0,
or various other problems due to integer underflow when calculating
atom data size, including segmentation fault or worker process
memory disclosure.
1 file changed
tree: 4880e4702511729b6706e93162b82567578767c7
  1. auto/
  2. conf/
  3. contrib/
  4. docs/
  5. misc/
  6. src/
  7. .hgtags