This fixes https://github.com/docker/docker/issues/32400
We were already actually vendoring from github.com/ijc25/Gotty in order to
pickup github.com/Nvveen/Gotty#1. github.com/ijc25/Gotty#master now contains
merges of both of those upstream PRs.
Signed-off-by: Ian Campbell <ian.campbell@docker.com>
Upstream-commit: b7ced33036f24852e7d8095c7f38f5bb8d2b8ef9
Component: engine