Handle exception if no stress result exists

Covers an edge case that the result file doesn't exist on device.
This may happen if test instrumentation crashes before start.

Change-Id: Ie697b2379a028626efc73f5fadd5762ecbe9eddd
2 files changed
tree: c1743ead140005856da5dc2600dd64770e53b4d3
  1. src/