facebook/hhvm — pull request #1773 by jeffchan (2014-02-09 19:15:50+00:00)
Title: Fix libzip to check zip archive members pointer before freeing

This is a hotfix for #1754. The actual fix is already in the master
branch of the source library:
http://hg.nih.at/libzip/comparison/8cc36648e0a2/lib/zip_fclose.c