[v14.x backport] http2: fix memory leak when nghttp2 hd threshold is reached#45310

ywave620 wants to merge 2 commits into

nodejs:v14.x-stagingnodejs/node:v14.x-stagingfrom

ywave620:v14.x-staging-h2-large-hdr-fixywave620/node:v14.x-staging-h2-large-hdr-fixCopy head branch name to clipboard