diff --git a/wp-includes/js/tinymce/plugins/wpemoji/plugin.js b/wp-includes/js/tinymce/plugins/wpemoji/plugin.js
index d3784ddf89..d4ae77b007 100644
--- a/wp-includes/js/tinymce/plugins/wpemoji/plugin.js
+++ b/wp-includes/js/tinymce/plugins/wpemoji/plugin.js
@@ -1,6 +1,6 @@
 ( function( tinymce, wp, twemoji ) {
 	tinymce.PluginManager.add( 'wpemoji', function( editor ) {
-		var typing, match,
+		var typing,
 			env = tinymce.Env,
 			ua = window.navigator.userAgent,
 			isWin = ua.indexOf( 'Windows' ) > -1,
@@ -53,7 +53,7 @@
 				typing = ( event.type === 'keydown' );
 			} );
 
-			editor.on( 'input', function( event ) {
+			editor.on( 'input', function() {
 				if ( typing ) {
 					return;
 				}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index f072f63e6b..94a75a5fa6 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-beta3-31922';
+$wp_version = '4.2-beta3-31923';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.