adblock-fast: bugfix: block domains from config when not using block-lists

* remove empty lines from the combined list to allo optimization code
  to work properly

Signed-off-by: Stan Grishin <stangri@melmac.ca>

net/adblock-fast/Makefile

@@ -6,7 +6,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=adblock-fast
 PKG_VERSION:=1.1.0
-PKG_RELEASE:=4
+PKG_RELEASE:=5
 PKG_MAINTAINER:=Stan Grishin <stangri@melmac.ca>
 PKG_LICENSE:=GPL-3.0-or-later
 

net/adblock-fast/files/etc/init.d/adblock-fast

@@ -1209,6 +1209,7 @@ download_lists() {
 $(cat $A_TMP)"
 	for hf in ${allowed_domain}; do hf="$(echo "$hf" | sed 's/\./\\./g')"; allow_filter="$allow_filter/(^|\.)${hf}$/d;"; done
 
+	sed -i '/^[[:space:]]*$/d' "$B_TMP"
 	[ ! -s "$B_TMP" ] && return 1
 
 	output 1 'Processing downloads '