debug: wait for sendBreakpoint response before sending...

debug: wait for sendBreakpoint response before sending sendExceptionBreakpoints for backwards compatibility with adapters

src/vs/workbench/parts/debug/electron-browser/debugService.ts

@@ -222,7 +222,7 @@ export class DebugService extends ee.EventEmitter implements debug.IDebugService
 
 	private registerSessionListeners(): void {
 		this.toDispose.push(this.session.addListener2(debug.SessionEvents.INITIALIZED, (event: DebugProtocol.InitializedEvent) => {
-			Promise.join([this.sendAllBreakpoints(), this.sendExceptionBreakpoints()]).then(() =>
+			this.sendAllBreakpoints().then(() => this.sendExceptionBreakpoints()).then(() =>
 				this.session.configurationDone()).done(null, errors.onUnexpectedError);
 		}));