connman: add upstream patch to fix tethering without running dnsproxy

Signed-off-by: Stephan Raue <stephan@openelec.tv>

packages/network/connman/patches/connman-dnsproxy_Make_sure_we_are_not_accessing_null-hash.patch

@@ -0,0 +1,35 @@
+From 9944240ba52d19f04fb4bf468a8524f570e5fa6d Mon Sep 17 00:00:00 2001
+From: Jukka Rissanen <jukka.rissanen@linux.intel.com>
+Date: Fri, 22 Mar 2013 14:15:19 +0000
+Subject: dnsproxy: Make sure we are not accessing null hash
+
+If dnsproxy is not in use, like when connman has been started
+with -r option, then the listener_table will be NULL which can
+cause crash in hash table lookup call.
+---
+diff --git a/src/dnsproxy.c b/src/dnsproxy.c
+index f698cfd..7a9ca91 100644
+--- a/src/dnsproxy.c
++++ b/src/dnsproxy.c
+@@ -2916,6 +2916,9 @@ int __connman_dnsproxy_add_listener(int index)
+ 	if (index < 0)
+ 		return -EINVAL;
+ 
++	if (listener_table == NULL)
++		return 0;
++
+ 	if (g_hash_table_lookup(listener_table, GINT_TO_POINTER(index)) != NULL)
+ 		return 0;
+ 
+@@ -2947,6 +2950,9 @@ void __connman_dnsproxy_remove_listener(int index)
+ 
+ 	DBG("index %d", index);
+ 
++	if (listener_table == NULL)
++		return;
++
+ 	ifdata = g_hash_table_lookup(listener_table, GINT_TO_POINTER(index));
+ 	if (ifdata == NULL)
+ 		return;
+--
+cgit v0.9.1