Media: Fix JavaScript TypeError after [45376].

Props desrosj, afercia.
Fixes #48021.

Built from https://develop.svn.wordpress.org/trunk@46321


git-svn-id: http://core.svn.wordpress.org/trunk@46120 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/media-views.js

@@ -5321,7 +5321,9 @@ UploaderStatus = View.extend(/** @lends wp.media.view.UploaderStatus.prototype *
 		}
 		wp.Uploader.errors.reset();
 		// Move focus to the modal after the dismiss button gets removed from the DOM.
-		this.controller.modal.focusManager.focus();
+		if ( this.controller.modal ) {
+			this.controller.modal.focusManager.focus();
+		}
 	}
 });
 

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-beta1-46320';
+$wp_version = '5.3-beta1-46321';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.