From fe78ae1be42464f08f0e8430ac2f74a706b52aa5 Mon Sep 17 00:00:00 2001
From: Walt Sorensen <photodude@users.noreply.github.com>
Date: Sun, 19 Feb 2017 18:24:58 -0700
Subject: [PATCH] Fixed bug introduced by preg_match change from
 php/php-src#1303

Fix from https://github.com/squizlabs/PHP_CodeSniffer/commit/d397f87d58119cd04cba1bc4dda1216ebb9ba642
---
 Joomla/Sniffs/Commenting/FileCommentSniff.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Joomla/Sniffs/Commenting/FileCommentSniff.php b/Joomla/Sniffs/Commenting/FileCommentSniff.php
index bf70e543..b9cc6f43 100644
--- a/Joomla/Sniffs/Commenting/FileCommentSniff.php
+++ b/Joomla/Sniffs/Commenting/FileCommentSniff.php
@@ -530,7 +530,7 @@ protected function processCopyright(PHP_CodeSniffer_File $phpcsFile, array $tags
 			if (preg_match('/^.*?([0-9]{4})((.{1})([0-9]{4}))? (.+)$/', $content, $matches) !== 0)
 			{
 				// Check earliest-latest year order.
-				if ($matches[3] !== '')
+				if ($matches[3] !== '' && $matches[3] !== null)
 				{
 					if ($matches[3] !== '-')
 					{
@@ -538,7 +538,7 @@ protected function processCopyright(PHP_CodeSniffer_File $phpcsFile, array $tags
 						$phpcsFile->addError($error, $tag, 'CopyrightHyphen');
 					}
 
-					if ($matches[4] !== '' && $matches[4] < $matches[1])
+					if ($matches[4] !== '' && $matches[4] !== null && $matches[4] < $matches[1])
 					{
 						$error = "Invalid year span \"$matches[1]$matches[3]$matches[4]\" found; consider \"$matches[4]-$matches[1]\" instead";
 						$phpcsFile->addWarning($error, $tag, 'InvalidCopyright');