mosquitto: Upgrade 1.6.11 -> 1.6.12

Upgrade to release 1.6.12:

Security:
- In some circumstances, Mosquitto could leak memory when handling
  PUBLISH messages. This is limited to incoming QoS 2 messages,
  and is related to the combination of the broker having
  persistence enabled, a clean session=false client, which was
  connected prior to the broker restarting, then has reconnected
  and has now sent messages at a sufficiently high rate that the
  incoming queue at the broker has filled up and hence messages
  are being dropped. This is more likely to have an effect where
  max_queued_messages is a small value. This has now been fixed.

Broker:
- Build warning fixes when building with WITH_BRIDGE=no and
  WITH_TLS=no.

Clients:
- All clients exit with an error exit code on CONNACK failure.
- Don't busy loop with `mosquitto_pub -l` on a slow connection.

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-connectivity/mosquitto/mosquitto_1.6.12.bb

@@ -20,8 +20,8 @@ SRC_URI = "http://mosquitto.org/files/source/mosquitto-${PV}.tar.gz \
            file://install-protocol.patch \
 "
 
-SRC_URI[md5sum] = "35925c7ccd1bac87e4201b635ffa66a1"
-SRC_URI[sha256sum] = "b02d8f1368c40d5779ee125c37daf9003608eb47d7fbb04c5b938c76c1230a1f"
+SRC_URI[md5sum] = "beb8d76d6e45f1e66d711006082a631f"
+SRC_URI[sha256sum] = "548d73d19fb787dd0530334e398fd256ef3a581181678488a741a995c4f007fb"
 
 inherit systemd update-rc.d useradd cmake