Fixes Inspector Showing Unselected Info

When deselecting a node, the inspector would show the name of the last thing selected.

editor/inspector_dock.cpp

@@ -408,6 +408,10 @@ void InspectorDock::update(Object *p_object) {
 		warning->hide();
 		search->set_editable(false);
 
+		editor_path->set_text("");
+		editor_path->set_tooltip("");
+		editor_path->set_icon(NULL);
+
 		return;
 	}