From b94532c29f7a4526e8c48961a1451e4ae1a9460c Mon Sep 17 00:00:00 2001
From: Rydori <daniel.siegert@udo.edu>
Date: Fri, 29 Sep 2017 13:30:41 +0200
Subject: [PATCH] Error if style is null (#4781)

I tested in Chrome and when style(line 50) is null, style.toString is undefined
Reason: typeof null equals "object" (at least in Chrome)
---
 src/helpers/helpers.canvas.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/helpers/helpers.canvas.js b/src/helpers/helpers.canvas.js
index 1429a31e6e0..13b110268b9 100644
--- a/src/helpers/helpers.canvas.js
+++ b/src/helpers/helpers.canvas.js
@@ -47,7 +47,7 @@ var exports = module.exports = {
 	drawPoint: function(ctx, style, radius, x, y) {
 		var type, edgeLength, xOffset, yOffset, height, size;
 
-		if (typeof style === 'object') {
+		if (style && typeof style === 'object') {
 			type = style.toString();
 			if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {
 				ctx.drawImage(style, x - style.width / 2, y - style.height / 2, style.width, style.height);