hotplug2: fix "MALLOC FAILURE!" message caused by a missing return code check on recv()

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18061 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/hotplug2/patches/100-recv_check.patch

@@ -0,0 +1,12 @@
+--- a/hotplug2.c
++++ b/hotplug2.c
+@@ -300,6 +300,9 @@ int main(int argc, char *argv[]) {
+ 	worker_ctx = settings->worker->module->init(settings);
+ 	while (process) {
+ 		size = recv(settings->netlink_socket, &buffer, sizeof(buffer), 0);
++		if (size < 0)
++			continue;
++
+ 		uevent = uevent_deserialize(buffer, size);
+ 		
+ 		if (uevent == NULL)