[Buildroot] [PATCH 1/1] zeromq: bump to version 4.3.1

[Peter Korsgaard <peter@korsgaard.com>]

>>>>> "Asaf" == Asaf Kahlon <asafka7@gmail.com> writes:

 > Remove the patches as they're already on upstream.
 > As a consequence, no need to autoreconf anymore.
 > Also added license hashes.

 > Signed-off-by: Asaf Kahlon <asafka7@gmail.com>

Looking at https://github.com/zeromq/libzmq/releases, I see that this
release also fixes security issues:

CVE-2019-6250: A vulnerability has been found that would allow attackers to direct a peer to
jump to and execute from an address indicated by the attacker.
This issue has been present since v4.2.0. Older releases are not affected.
NOTE: The attacker needs to know in advance valid addresses in the peer's
memory to jump to, so measures like ASLR are effective mitigations.
NOTE: this attack can only take place after authentication, so peers behind
CURVE/GSSAPI are not vulnerable to unauthenticated attackers.
See #3351 for more details.

Once more, please mark version bumps that fix security vulnerabilities
as such so I don't miss them when backporting to the stable/LTS
branches.

-- 
Bye, Peter Korsgaard