Users: Correctly display an error message after clicking the "Send Reset Link" button.

The `addInlineNotice()` function expects a single string as a success or error message, not an array of strings.

Follow-up to [50129].

Props audrasjb.
Fixes #52573.
Built from https://develop.svn.wordpress.org/trunk@50390


git-svn-id: http://core.svn.wordpress.org/trunk@50001 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/ajax-actions.php

@@ -5433,6 +5433,6 @@ function wp_ajax_send_password_reset() {
 			sprintf( __( 'A password reset link was emailed to %s.' ), $user->display_name )
 		);
 	} else {
-		wp_send_json_error( $results );
+		wp_send_json_error( $results->get_error_message() );
 	}
 }

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.7-beta3-50389';
+$wp_version = '5.7-beta3-50390';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.