Handle null stacks gracefully.

Bug: 10928395
Change-Id: Ie7c3f7e0eb068ece0cf678a5d6346f18a413856b
3 files changed
tree: 233ec2a0c52b7d5efaed82bc05942ed7531dada7
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml