Added '@' to prevent errors in the event we can't read /dev/urandom (as per b4cfc96f2a)

application/third_party/PasswordHash.php

@@ -48,7 +48,7 @@ class PasswordHash {
 	function get_random_bytes($count)
 	{
 		$output = '';
-		if (is_readable('/dev/urandom') &&
+		if (@is_readable('/dev/urandom') &&
 		    ($fh = @fopen('/dev/urandom', 'rb'))) {
 			$output = fread($fh, $count);
 			fclose($fh);