fix a logic issue in the flow_analysis.Status.__and__
fix a logic issue in the flow_analysis.Status.__and__

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