ssue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'.
Python now uses SipHash24 on all major platforms.
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index efa0192..8217b1e 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -897,7 +897,7 @@
 {
     if (a->ob_shash == -1) {
         /* Can't fail */
-        a->ob_shash = _Py_HashBytes((unsigned char *) a->ob_sval, Py_SIZE(a));
+        a->ob_shash = _Py_HashBytes(a->ob_sval, Py_SIZE(a));
     }
     return a->ob_shash;
 }