From bde593557de80d3cf6f6e322d2026fde6f4b28f9 Mon Sep 17 00:00:00 2001
From: Mark Baker <mark@lange.demon.co.uk>
Date: Sat, 3 Dec 2011 10:02:24 +0000
Subject: [PATCH] Minor performance optimisation: use $x+=3 instead of $x=$x+3

git-svn-id: https://phpexcel.svn.codeplex.com/svn/trunk@83576 2327b42d-5241-43d6-9e2a-de5ac946f064
---
 Classes/PHPExcel/Shared/Date.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Classes/PHPExcel/Shared/Date.php b/Classes/PHPExcel/Shared/Date.php
index d0b96838..111b479f 100644
--- a/Classes/PHPExcel/Shared/Date.php
+++ b/Classes/PHPExcel/Shared/Date.php
@@ -181,9 +181,9 @@ class PHPExcel_Shared_Date
 
 		//	Julian base date Adjustment
 		if ($month > 2) {
-			$month = $month - 3;
+			$month -= 3;
 		} else {
-			$month = $month + 9;
+			$month += 9;
 			--$year;
 		}