asyncout-773313: Test tweak - finally > variable
asyncout-773313: Test tweak - finally > variable

It's better to put the test function call in a try {} finally {} block
than store the return value, tidy-up and return because it's more
resilient to failure, and clearer.

Signed-off-by: Joe Walker <7a17872fbb32c7d760c9a16ee3076daead11efcf@mozilla.com>

mozilla/gcli,mozilla/gcli,joewalker/gcli,joewalker/gcli,mozilla/gcli