mosquitto: bump to 1.5.3

Full changelog at https://github.com/eclipse/mosquitto/blob/v1.5.3/ChangeLog.txt

Primary change:
CVE fix for CVE-2018-12543 - prevent crash on topics that begin with $
but are not $SYS

Selected other fixes relevant to OpenWrt since 1.5.1:
- Fix retained messages not sent by bridges on outgoing topics at the first
  connection. Closes #701.
- Fix duplicate clients being added to by_id hash before the old client was
  removed. Closes #645.
- Fix excessive CPU usage when the number of sockets exceeds the system limit.
  Closes #948.
- Fix for bridge connections when using WITH_ADNS=yes.
- Fix round_robin false behaviour. Closes #481.
- Fix segfault on HUP when bridges and security options are configured.
  Closes #965.

Signed-off-by: Karl Palsson <karlp@etactica.com>

net/mosquitto/Makefile

@@ -9,14 +9,14 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=mosquitto
-PKG_VERSION:=1.5.1
+PKG_VERSION:=1.5.3
 PKG_RELEASE:=3
 PKG_LICENSE:=BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE.txt
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://mosquitto.org/files/source/
-PKG_HASH:=8557bc7ae34dfaf32a0fb56d2491b7a7f731269c88337227233013502df4d5b0
+PKG_HASH:=3081a998d303a883b1cd064009beabc88aa9159e26f5258a4ae6007160491d10
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_NAME)-$(PKG_VERSION)
 
 include $(INCLUDE_DIR)/package.mk