Security update for gc
This update for gc fixes the following issues:
- integer overflow in GC_MALLOC_ATOMIC() (CVE-2016-9427, bsc#1011276)
- Submitted by Andreas Stieger (AndreasStieger)
Fixed bugs
bnc#1011276
VUL-0: CVE-2016-9427: gc: integer overflow in GC_MALLOC_ATOMIC