nodogsplash: check if TrafficControl is enabled before testing imq module requirement.

This avoids failing to start in current OpenWrt Attitude Adjustment and trunk,
which lack IMQ support (and WONTFIX). Suggested in the issue discussed in:
http://ml.ninux.org/pipermail/nodogsplash/2013-May/000009.html

Signed-off-by: Gui Iribarren <gui@altermundi.net>

nodogsplash/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=nodogsplash
 PKG_FIXUP:=autoreconf
 PKG_VERSION:=0.9_beta9.9.8
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)/
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz

nodogsplash/files/nodogsplash.init

@@ -13,6 +13,7 @@
 
 IPT=/usr/sbin/iptables
 WD_DIR=/usr/bin
+NDS_CONF=/etc/nodogsplash/nodogsplash.conf
 OPTIONS=""
 START=65
 STOP=65
@@ -168,9 +169,11 @@ test_module() {
 
     do_module_tests "ipt_mac"
     do_module_tests "ipt_mark"
-    # if not using traffic control,
-    # you can comment out the following 3 lines:
-    do_module_tests "imq" "numdevs=2"
-    do_module_tests "ipt_IMQ"
-    do_module_tests "sch_htb"
+
+    # test for imq modules, only if TrafficControl is enabled in conf
+    if ( grep -q '^[[:space:]]*TrafficControl[[:space:]]\+yes' "$NDS_CONF" ) ; then
+        do_module_tests "imq" "numdevs=2"
+        do_module_tests "ipt_IMQ"
+        do_module_tests "sch_htb"
+    fi
 }