This update for zlib fixes the following issues:
CVE-2016-9843: Big-endian out-of-bounds pointer (bsc#1013882)
CVE-2016-9842: Undefined Left Shift of Negative Number (bsc#1003580)
CVE-2016-9840 CVE-2016-9841: Out-of-bounds pointer arithmetic in inftrees.c (bsc#1003579)
Incompatible declarations for external linkage function deflate (bsc#1003577)