fix(p2p): closing on end reverted (it was ok by default)

src/background/spider.js

@@ -1174,15 +1174,12 @@ if(config.spaceQuota)
 
 this.stop = (callback) => {
 	console.log('spider closing...')
-	tcpServer.close(() => {
+	torrentClient.destroy(() => {
-		console.log('p2p server closed')
+		sphinx.end(() => spider.close(() => {
-		torrentClient.destroy(() => {
+			mysqlSingle.destroy()
-			sphinx.end(() => spider.close(() => {
+			console.log('spider closed')
-				mysqlSingle.destroy()
+			callback()
-				console.log('spider closed')
+		}))
-				callback()
-			}))
-		})
 	})
 }
 return this