fix(dev): await devServer.close

Author: danielroe

packages/nuxi/src/dev/index.ts

@@ -137,9 +137,9 @@ export async function initialize(devContext: NuxtDevContext, ctx: InitializeOpti
 
 return{
 listener: devServer.listener,
-close: ()=>{
+close: async()=>{
 devServer.closeWatchers()
-devServer.close()
+awaitdevServer.close()
 },
 onReady: (callback: (address: string)=>void)=>{
 if(address){