title: QuartzCore - CA::Render::Shmem::new_shmen() memory leak
body: <p>I find out QuartzCore - CA::Render::Shmem::new_shmen()craete somthing and never release and cause memory leak.</p>
  
  <p>This repeats many times and so my memory allocation increase gradually.</p>
  
  <p>How can i fix this problem?</p>