From b9b5a0b77f1e660e1ff60d9534f8a43da592e6be Mon Sep 17 00:00:00 2001
From: Jonas Nutz <jonas_nutz@visual4.de>
Date: Fri, 5 Oct 2018 13:04:08 +0200
Subject: [PATCH] Fix unsupported operand types error when codepoints arrays
 are merged - corrected assignment of resulting array

---
 include/tcpdf_fonts.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/tcpdf_fonts.php b/include/tcpdf_fonts.php
index 162a28d..459aa1a 100644
--- a/include/tcpdf_fonts.php
+++ b/include/tcpdf_fonts.php
@@ -2006,7 +2006,7 @@ class TCPDF_FONTS {
 		if (is_array($currentfont['subsetchars']) && is_array($carr))
 			$currentfont['subsetchars'] += array_fill_keys($carr, true);
 		else
-			array_merge($currentfont['subsetchars'], $carr);
+			$currentfont['subsetchars'] = array_merge($currentfont['subsetchars'], $carr);
 		return $carr;
 	}