diff --git a/wp-admin/upload.php b/wp-admin/upload.php
index b690d02506..d307453dc1 100644
--- a/wp-admin/upload.php
+++ b/wp-admin/upload.php
@@ -119,6 +119,7 @@ $doaction = $wp_list_table->current_action();
 
 if ( $doaction ) {
 	check_admin_referer( 'bulk-media' );
+	$post_ids = array();
 
 	if ( 'delete_all' === $doaction ) {
 		$post_ids = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_type='attachment' AND post_status = 'trash'" );
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 990cb88104..6ce3828c01 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.8-alpha-51110';
+$wp_version = '5.8-alpha-51111';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.