Filesystem: Add `return` statement to `WP_Filesystem_ftpsockets->rmdir`

Props tymvie.
Fixes #39405.


git-svn-id: https://develop.svn.wordpress.org/trunk@39644 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/class-wp-filesystem-ftpsockets.php

@@ -470,9 +470,10 @@ class WP_Filesystem_ftpsockets extends WP_Filesystem_Base {
 	 *
 	 * @param string $path
 	 * @param bool $recursive
+	 * @return bool
 	 */
 	public function rmdir($path, $recursive = false ) {
-		$this->delete($path, $recursive);
+		return $this->delete($path, $recursive);
 	}
 
 	/**