TinyMCE, inline link: when searching, do not empty the URL input field when using the arrow keys to highlight items.

Props afercia.
See #33301.
Built from https://develop.svn.wordpress.org/trunk@36974


git-svn-id: http://core.svn.wordpress.org/trunk@36942 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/tinymce/plugins/wplink/plugin.js

@@ -348,6 +348,7 @@
 						},
 						focus: function( event, ui ) {
 							$input.attr( 'aria-activedescendant', 'mce-wp-autocomplete-' + ui.item.ID );
+							event.preventDefault();
 						},
 						select: function( event, ui ) {
 							$input.val( ui.item.permalink );

wp-includes/js/wplink.js

@@ -76,6 +76,7 @@ var wpLink;
 				},
 				focus: function( event, ui ) {
 					$input.attr( 'aria-activedescendant', 'mce-wp-autocomplete-' + ui.item.ID );
+					event.preventDefault();
 				},
 				select: function( event, ui ) {
 					$input.val( ui.item.permalink );

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-beta3-36973';
+$wp_version = '4.5-beta3-36974';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.