Mark node as terminator if no control-flow node

Cython/Compiler/FlowControl.py

@@ -680,10 +680,12 @@ class CreateControlFlowGraph(CythonTransform):
         return node
 
     def visit_StatListNode(self, node):
+        if self.flow.block:
             for stat in node.stats:
+                self.visit(stat)
                 if not self.flow.block:
+                    stat.is_terminator = True
                     break
-            self.visit(stat)
         return node
 
     def visit_Node(self, node):