Security update for GraphicsMagick

Open Source Vulnerabilities SUSE-SU-2017:2229-1

This update for GraphicsMagick fixes the following issues: Security issues fixed: - CVE-2017-8350: The PNG/JNG decoder recieved an incremental fix, fixing some related issues in the same code. (bsc#1036985) - CVE-2017-9439: A memory leak was found in the function ReadPDBImage incoders/pdb.c (bsc#1042826) - CVE-2017-9501: An assertion failure could cause a denial of service via a crafted file (bsc#1043289) - CVE-2017-11403: The ReadMNGImage function in coders/png.c has an out-of-order CloseBlob call, resulting in a use-after-free via a crafted file (bsc#1049072) - CVE-2017-11643: A heap overflow in WriteCMYKImage()function in coders/cmyk.c was fixed (bsc#1050611) - CVE-2017-11636: A heap overflow in WriteRGBImage() in coders/rgb.c was fixed (bsc#1050674)