From 16e4d3adfe4670118b86b69735f688463127525b Mon Sep 17 00:00:00 2001
From: cristy <urban-warrior@git.imagemagick.org>
Date: Mon, 25 Jul 2011 01:23:37 +0000
Subject: [PATCH]

---
 PerlMagick/Magick.xs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/PerlMagick/Magick.xs b/PerlMagick/Magick.xs
index a5be949e8..4921db274 100644
--- a/PerlMagick/Magick.xs
+++ b/PerlMagick/Magick.xs
@@ -10587,6 +10587,8 @@ Mogrify(ref,...)
           if (attribute_flag[0] == 0)
             break;
           av=(AV *) argument_list[0].array_reference;
+          if (av == (AV *) NULL)
+            break;
           order=(size_t) sqrt(av_len(av)+1);
           color_matrix=(double *) AcquireQuantumMemory(order,order*
             sizeof(*color_matrix));
-- 
2.40.0