Debugging a non-compiling app doesn't automatically end the debug session

[jcdickinson]

Repro

1. Apply the workaround in Cannot run project #474 on: VSCode 1.5.2, Go 1.7.1, Windows 10 Anniversary.
2. Create a simple hello world main.go.
3. Press F5 and accept the defaults for launch.json.
4. Press F5 and make sure that debugging works.
5. Add a simple compilation error (e.g. unused variable).
6. Press F5.

Outcome

The app fails to compile, the debugger toolbar appears and the stop button must be clicked. The debug log shows exit status 2. The debugging session must be manually terminated.

Expected Outcome

The app fails to compile and no debug session is started, or the debug session is automatically terminated.

[ramya-rao-a]

Fixed in the latest update (0.6.54) to the Go extension.