Update/Install: Fix plugin updates from the details modal on update-core.php.

The plugin details modal has been greatly improved in [37714]. However, Shiny Updates aren't yet implemented on the WordPress Updates screen. Therefore, we need to fall back to The Bleak Screen of Sadness. Otherwise nothing happens when trying to install an update from inside the modal.

Props Nikschavan.
Fixes #37126.
Built from https://develop.svn.wordpress.org/trunk@37973


git-svn-id: http://core.svn.wordpress.org/trunk@37914 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/js/updates.js

@@ -2081,7 +2081,7 @@
 
 			$.support.postMessage = !! window.postMessage;
 
-			if ( false === $.support.postMessage || null === target ) {
+			if ( false === $.support.postMessage || null === target || -1 !== window.parent.location.pathname.indexOf( 'update-core.php' ) ) {
 				return;
 			}
 

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.6-beta1-37972';
+$wp_version = '4.6-beta1-37973';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.