CameraMetadata: Add sanity check to avoid accidental memory corruption.

Update shouldn't be called with a pointer from the metadata structure
being updated, since it might be resized.  The API really needs rework,
but until that happens, detect this condition and error out.

Bug: 22542551
Change-Id: I896c34d8134ac3b101d050fc8aa5d203a08e7267
1 file changed