src/goDebug: fix noDebug mode for windows

On windows, the executable file has to have '.exe' extension. Add the
extension when building the program in noDebug mode.

Updates #918

Change-Id: Icddf6c2dced50f885e1dd27fc685a14ea54d52e1
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/274872
Trust: Suzy Mueller <suzmue@golang.org>
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>

src/debugAdapter/goDebug.ts

@@ -31,6 +31,7 @@ import {
 import { DebugProtocol } from 'vscode-debugprotocol';
 import { parseEnvFiles } from '../utils/envUtils';
 import {
+ correctBinname,
  envPath,
  expandFilePathInOutput,
  fixDriveCasingInWindows,
@@ -482,8 +483,7 @@ export class Delve {
  if (mode === 'debug') {
  this.noDebug = true;
  const build = ['build'];
-
- const output = path.join(os.tmpdir(), 'out');
+ const output = path.join(os.tmpdir(), correctBinname('out'));
  build.push(`-o=${output}`);
 
  const buildOptions: { [key: string]: any } = { cwd: dirname, env };