This update for zlib fixes the following issue:
crc32_combine64 and crc32_combine_gen64 functions due to missing
checks for negative lengths (bsc#1258392).1.2.13-150500.4.6.11.2.13-150500.4.6.11.2.13-150500.4.6.11.2.13-150500.4.6.11.2.13-150500.4.6.11.2.13-150500.4.6.11.2.13-150500.4.6.11.2.13-150500.4.6.11.2.13-150500.4.6.11.2.13-150500.4.6.1