utility code construction for struct conversion requires constructing the...

utility code construction for struct conversion requires constructing the field conversion functions as well

--HG--
extra : transplant_source : %A3%81%87%E2%0A%20%DA%7D%7E%5B%A0%9B%80i%F9%8Az%9B%F3%DC

Cython/Compiler/PyrexTypes.py

@@ -2880,8 +2880,7 @@ class CStructOrUnionType(CType):
 
         if self._convert_to_py_code is None:
             for member in self.scope.var_entries:
-                if (not member.type.to_py_function and
-                        not member.type.create_to_py_utility_code(env)):
+                if not member.type.create_to_py_utility_code(env):
                     self.to_py_function = None
                     self._convert_to_py_code = False
                     return False
@@ -2900,8 +2899,7 @@ class CStructOrUnionType(CType):
 
         if self._convert_from_py_code is None:
             for member in self.scope.var_entries:
-                if (not member.type.from_py_function and
-                        not member.type.create_from_py_utility_code(env)):
+                if not member.type.create_from_py_utility_code(env):
                     self.from_py_function = None
                     self._convert_from_py_code = False
                     return False