fix local variable init code in ScopedExprNode

Cython/Compiler/ExprNodes.py

@@ -4181,12 +4181,13 @@ class ScopedExprNode(ExprNode):
                 code.put_var_declaration(entry)
                 if entry.type.is_pyobject and entry.used:
                     py_entries.append(entry)
-                    code.put_init_var_to_py_none(entry)
         if not py_entries:
             # no local Python references => no cleanup required
             generate_inner_evaluation_code(code)
             code.putln('} /* exit inner scope */')
             return
+        for entry in py_entries:
+            code.put_init_var_to_py_none(entry)
 
         # must free all local Python references at each exit point
         old_loop_labels = tuple(code.new_loop_labels())