Security update for GraphicsMagick
This update for GraphicsMagick fixes the following issues:
- CVE-2017-9142: missing checks in theReadOneJNGImage function in coders/png.c could trigger an assertion failure (boo#1040304)
- Submitted by Petr Gajdos (pgajdos)
Fixed bugs
bnc#1040304
VUL-1: CVE-2017-9142: GraphicsMagick,ImageMagick: missing checks in theReadOneJNGImage function in coders/png.c