message: Add return value to getEnvironment().
  This fixes a bug where `env` was not being propagated to spawned server instances.
diff: @@ -1391,6 +1391,7 @@ export class LanguageClient {
  let result: any = Object.create(null);
  Object.keys(process.env).forEach(key => result[key] = process.env[key]);
  Object.keys(env).forEach(key => result[key] = env[key]);
  + return result;
  }
  function startedInDebugMode(): boolean {
  