mosquitto: add upstream security fix

Fixes CVE-2017-9868: In Mosquitto through 1.4.12, mosquitto.db (aka the
persistence file) is world readable, which allows local users to obtain
sensitive MQTT topic information.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mosquitto/mosquitto.hash

@@ -1,2 +1,3 @@
 # Locally computed:
 sha512  75e6105498869ab13265df7a0bea6052c014d59d0c0efb61162d8257d34c0153fce32130e84c28e99fd494f374949aac5e01c19f7439c2eea575b52ef1179c3c  mosquitto-1.4.12.tar.gz
+sha256  06abd1206e548ac2378dd96f5434cb3e40ed77cecb6a9c37fbabab0b0f1360e5  mosquitto-1.4.x_cve-2017-9868.patch

package/mosquitto/mosquitto.mk

@@ -9,6 +9,8 @@ MOSQUITTO_SITE = http://mosquitto.org/files/source
 MOSQUITTO_LICENSE = EPL-1.0 or EDLv1.0
 MOSQUITTO_LICENSE_FILES = LICENSE.txt epl-v10 edl-v10
 MOSQUITTO_INSTALL_STAGING = YES
+MOSQUITTO_PATCH = \
+	https://mosquitto.org/files/cve/2017-9868/mosquitto-1.4.x_cve-2017-9868.patch
 
 MOSQUITTO_MAKE_OPTS = \
 	UNAME=Linux \