Since the Busybox version bump to 1.36.0 the TestS6 fails during the test teardown. Backport an upstream patch fixing signal handling (SIGWINCH), see [1]. Fixes: https://gitlab.com/buildroot.org/buildroot/-/jobs/4322819388 [1] https://bugs.busybox.net/show_bug.cgi?id=15256 Signed-off-by: Romain Naour <romain.naour@gmail.com> [Peter: use upstream commit as-is] Signed-off-by: Peter Korsgaard <peter@korsgaard.com>