datafeed fixes; line drawing fix

src/charts/datafeed.js

@@ -558,6 +558,7 @@ export const DataFeed = {
 
 
 	updatePushedCache(key, ohlcs) {
+		if (ohlcs.length===0) return
 		log('updatePushedCache', key, ohlcs)
 		if (!(key in this.pushedBars))
 			this.pushedBars[key] = ohlcs
@@ -579,8 +580,8 @@ export const DataFeed = {
 
 
 	pushToTV(key, ohlcs) {
-		if (ohlcs.length===0) return
 		log('pushing bars to tv', ohlcs)
+		if (ohlcs.length===0) return
 		this.updatePushedCache(key, ohlcs);  // we cache the raw bars before inversion so they match dexorder data sources
 		const sub = subByKey[key]
 		if (sub===undefined) {