addrwatch: Update init script

This replaces the use of uci_validate_section() with
uci_load_validate(), which removes the need to declare local variables
for every config option.

This also lets procd trigger the validation function directly, and
removes some unnecessary curly brackets.

Signed-off-by: Jeffery To <jeffery.to@gmail.com>

net/addrwatch/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=addrwatch
 PKG_VERSION:=1.0.1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/fln/addrwatch/tar.gz/v$(PKG_VERSION)?