Ensure the transport server socket is closed when a JDWP test fails.

This is to prevent the port used in the transport address
from being not reusable in subsequent tests.

Test: art/tools/run-jdwp-tests.sh --mode=host --variant=X64 --no-jit
Bug: 29984056
Change-Id: I194f97c7b63e6f5f3d3e62deef1c2c5e5ecc023e
2 files changed