Embeds: Avoid a JS error in wp.receiveEmbedMessage if data parameter is not set.

SergeyBiryukov · SergeyBiryukov · commit 216ff77268d9 · 2018-08-31T06:28:27.000Z
Props dsifford, kadamwhite. Merges [43593] and [43597] to the 4.9 branch. Fixes #44832. git-svn-id: https://develop.svn.wordpress.org/branches/4.9@43600 602fd350-edb4-49c9-b593-d223f7449a82
diff --git a/src/wp-includes/js/wp-embed.js b/src/wp-includes/js/wp-embed.js
@@ -28,6 +28,11 @@
 
 	window.wp.receiveEmbedMessage = function( e ) {
 		var data = e.data;
+
+		if ( ! data ) {
+			return;
+		}
+
 		if ( ! ( data.secret || data.message || data.value ) ) {
 			return;
 		}
