am c4c3ee2b: Return if DumpKernelStack can\'t find the kernel stack file.

* commit 'c4c3ee2b77064f6def92d394aec9a2ac7dee4e90':
  Return if DumpKernelStack can't find the kernel stack file.
tree: add26a859a517892afb8dd6b90db8cf425fd5db9
  1. build/
  2. jdwpspy/
  3. src/
  4. test/
  5. tools/
  6. .gitignore
  7. Android.mk