From cd9705d316dde3415dcd66908dba2c7e2206e4d4 Mon Sep 17 00:00:00 2001
From: dirk <dirk@git.imagemagick.org>
Date: Sun, 21 Aug 2016 15:39:22 +0200
Subject: [PATCH] Only resize in SetStringInfoLength when the length is
 different.

---
 MagickCore/string.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/MagickCore/string.c b/MagickCore/string.c
index 2f4998884..90da9cdb7 100644
--- a/MagickCore/string.c
+++ b/MagickCore/string.c
@@ -1780,6 +1780,8 @@ MagickExport void SetStringInfoLength(StringInfo *string_info,
 {
   assert(string_info != (StringInfo *) NULL);
   assert(string_info->signature == MagickCoreSignature);
+  if (string_info->length == length)
+    return;
   if (~length < MagickPathExtent)
     ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
   string_info->length=length;
-- 
2.40.0