1 The following link explains the issue in detail:

     2 http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=23117

     3 

     4 --------------------------------------------------------------------------------

     5 --- ImageMagick-6.8.3/coders/url.c	Mon Dec 10 05:09:00 2012

     6 +++ ImageMagick-6.8.3/coders/url.c	Mon Apr 22 00:07:50 2013

     7 @@ -154,12 +154,9 @@

     8      file=fdopen(unique_file,"wb");

     9    if ((unique_file == -1) || (file == (FILE *) NULL))

    10      {

    11 -      read_info=DestroyImageInfo(read_info);

    12 -      (void) CopyMagickString(image->filename,read_info->filename,

    13 -        MaxTextExtent);

    14        ThrowFileException(exception,FileOpenError,"UnableToCreateTemporaryFile",

    15 -        image->filename);

    16 -      image=DestroyImageList(image);

    17 +        read_info->filename);

    18 +      read_info=DestroyImageList(read_info);

    19        return((Image *) NULL);

    20      }

    21    (void) CopyMagickString(filename,image_info->magick,MaxTextExtent);