nghttp2: use-after-free

nghttp2 1.6.0 fixes a heap-based use-after-free bug in idle stream handling code, where an idle/closed stream could possibly be destroyed while it was still referenced...

nghttp2 -- use after free

nghttp2 reports: This release fixes heap-use-after-free bug in idle stream handling code. We strongly recommend to upgrade the older installation to this latest version as soon as possible...