From b8a9881be2622ba325a6bd8a95e566dcdf9584a9 Mon Sep 17 00:00:00 2001
From: cristy <urban-warrior@git.imagemagick.org>
Date: Tue, 31 Jan 2012 15:30:59 +0000
Subject: [PATCH]

---
 MagickCore/blob.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/MagickCore/blob.c b/MagickCore/blob.c
index 80ee5b6d0..050683cb9 100644
--- a/MagickCore/blob.c
+++ b/MagickCore/blob.c
@@ -2032,8 +2032,21 @@ MagickPrivate MagickBooleanType IsBlobSeekable(const Image *image)
   assert(image->signature == MagickSignature);
   if (image->debug != MagickFalse)
     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
-  seekable=(image->blob->type == FileStream) ||
-    (image->blob->type == BlobStream) ? MagickTrue : MagickFalse;
+  switch (image->blob->type)
+  {
+    case FileStream:
+    case BlobStream:
+    case ZipStream:
+    {
+      seekable=MagickTrue;
+      break;
+    }
+    default:
+    {
+      seekable=MagickFalse;
+      break;
+    }
+  }
   return(seekable);
 }
 
-- 
2.40.0