fixed InstanceElement / Function differentiation bug
fixed InstanceElement / Function differentiation bug

jonashaag/jedi,tjwei/jedi,mfussenegger/jedi,flurischt/jedi,dwillmer/jedi,WoLpH/jedi,flurischt/jedi,jonashaag/jedi,mfussenegger/jedi,dwillmer/jedi,tjwei/jedi,WoLpH/jedi