replace Py_(u)intptr_t with the c99 standard types
diff --git a/Parser/grammar.c b/Parser/grammar.c
index e2cce28..84223c6 100644
--- a/Parser/grammar.c
+++ b/Parser/grammar.c
@@ -63,7 +63,7 @@
     s->s_upper = 0;
     s->s_accel = NULL;
     s->s_accept = 0;
-    return Py_SAFE_DOWNCAST(s - d->d_state, Py_intptr_t, int);
+    return Py_SAFE_DOWNCAST(s - d->d_state, intptr_t, int);
 }
 
 void
@@ -105,7 +105,7 @@
     if (Py_DebugFlag)
         printf("Label @ %8p, %d: %s\n", ll, ll->ll_nlabels,
                PyGrammar_LabelRepr(lb));
-    return Py_SAFE_DOWNCAST(lb - ll->ll_label, Py_intptr_t, int);
+    return Py_SAFE_DOWNCAST(lb - ll->ll_label, intptr_t, int);
 }
 
 /* Same, but rather dies than adds */