ssue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'.
Python now uses SipHash24 on all major platforms.
diff --git a/Modules/pyexpat.c b/Modules/pyexpat.c
index 156dbf1..e11c153 100644
--- a/Modules/pyexpat.c
+++ b/Modules/pyexpat.c
@@ -1218,7 +1218,7 @@
      * has a backport of this feature where we also define XML_HAS_SET_HASH_SALT
      * to indicate that we can still use it. */
     XML_SetHashSalt(self->itself,
-                    (unsigned long)_Py_HashSecret.prefix);
+                    (unsigned long)_Py_HashSecret.expat.hashsalt);
 #endif
     XML_SetUserData(self->itself, (void *)self);
     XML_SetUnknownEncodingHandler(self->itself,