Security update for libxml2

This update for libxml2 fixes the following issues:

- CVE-2016-4658: Use after free via namespace node in XPointer ranges (bsc#1005544).

This update was imported from the SUSE:SLE-12:Update update project.

Fixed bugs
bnc#1005544
VUL-0: CVE-2016-4658: libxml2: Use after free via namespace node in XPointer ranges
Selected Binaries
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