Allow for empty plugin configuration subtrees, i.e. don't have to specifiy...

Allow for empty plugin configuration subtrees, i.e. don't have to specifiy config or path parameters if defaults should be used anyway

dcdbpusher/Configuration.cpp

@@ -68,7 +68,7 @@ bool Configuration::readPlugins(PluginManager& pluginManager) {
 	//read plugins
 	BOOST_FOREACH(boost::property_tree::iptree::value_type &plugin, cfg.get_child("plugins")) {
 		if (boost::iequals(plugin.first, "plugin")) {
-			if (!plugin.second.empty()) {
+			if (!plugin.second.data().empty()) {
 			    std::string pluginName = plugin.second.data();
                 std::string pluginConfig = ""; // path to config file for plugin
                 std::string pluginPath = ""; // path to plugin