Update goDebug.js to enable the removal of the debug binary

[NexWeb]

This modification works with PR #1379, RE #1345, to enable the removal of the debug binary when pressing the stop button.

[ramya-rao-a]

I am guessing you want the killTree to be called when pressing the stop button,
And when the stop button is pressed, if the debugProcess still exists, the killTree in the else block doesnt get called.
And that's why you are changing the if condition?

[ramya-rao-a]

Closng this PR as this change will break the original reason why the killTree was added in the first place.
When debugging is stopped, the processes spawned by the debug process were not getting terminated. That's the reason killTree was put in place.

[NexWeb]

This change just enables the debug binary to be deleted when a Goroutine has been started, as in the case of httpsSrv.ListenAndServe. It does not prevent the binary from being deleted in other cases.

[ramya-rao-a]

This change reverts the fix done for #438 which repros only in Linux.
The fix for #438 was to run the killTree on the id of the debug process so that all the processes spawned from the debug process get terminated.

This change to the if condition results in the killTree never getting called on the debug process.