Use proper reference counting on subtitle rects

[GoogleCodeExporter]

Describe the issue you're having:
It is possible for a subtitle rect to be in use in the consumer when the 
provider receives a flush and deletes all rects, which results
 in invalid memory access on those subtitle rects.

Implementation Notes:
Ideally, the rects should be refcounted and then released once the consumer is 
done with it.

Original issue reported on code.google.com by h.lepp...@gmail.com on 6 Dec 2012 at 11:08

[GoogleCodeExporter]

This issue was closed by revision 424c0b003bfb.

Original comment by h.lepp...@gmail.com on 31 Dec 2012 at 10:40

• Changed state: Fixed