Fix "Cannot read property '$context' of null" (#54)

Since there is a possibility to get `label` as `null` it should be also filtered out from updating.
chartjs · Apr 28, 2018 · b3e7564 · b3e7564
1 parent f8a0293
commit b3e7564
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/src/plugin.js b/src/plugin.js
@@ -232,8 +232,10 @@ Chart.plugins.register({
 			update = updates[i];
 			if (update[1]) {
 				label = update[0][EXPANDO_KEY];
-				label.$context.active = (update[1] === 1);
-				label.update(label.$context);
+				if (label) {
+					label.$context.active = (update[1] === 1);
+					label.update(label.$context);
+				}
 			}
 		}