Fix a typo in SLOT0 macro for the declaration of cache_str.
Dunno why I didn't catch this before.
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 476926c..8bae366 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -2390,7 +2390,7 @@
 static PyObject * \
 FUNCNAME(PyObject *self) \
 { \
-	static PyObject cache_str; \
+	static PyObject *cache_str; \
 	return call_method(self, OPSTR, &cache_str, ""); \
 }