make hashes always the size of pointers; introduce Py_hash_t #9778
diff --git a/Modules/_pickle.c b/Modules/_pickle.c
index 61db7cd..b810301 100644
--- a/Modules/_pickle.c
+++ b/Modules/_pickle.c
@@ -486,7 +486,7 @@
     size_t mask = (size_t)self->mt_mask;
     PyMemoEntry *table = self->mt_table;
     PyMemoEntry *entry;
-    long hash = (long)key >> 3;
+    Py_hash_t hash = (Py_hash_t)key >> 3;
 
     i = hash & mask;
     entry = &table[i];