let RemoveUnreachableCode discard any PassStatNodes (e.g. added by analysing...

let RemoveUnreachableCode discard any PassStatNodes (e.g. added by analysing declaration-only ExprStatNode)

Cython/Compiler/ParseTreeTransforms.py

@@ -2148,6 +2148,10 @@ class RemoveUnreachableCode(CythonTransform):
                 break
         return node
 
+    def visit_PassStatNode(self, _):
+        # just in case
+        return None
+
     def visit_IfClauseNode(self, node):
         self.visitchildren(node)
         if node.body.is_terminator: