Backport with no change a patch from version 1.21.0. This patch
was not cherry-picked by nginx to version 1.20.1.
Information about this CVE comes from
https://ubuntu.com/security/CVE-2021-3618.
Signed-off-by: Joe Slater <joe.slater@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>