Fixes issue #14234: CVE-2012-0876: Randomize hashes of xml attributes
in the hash table internal to the pyexpat module's copy of the expat
library to avoid a denial of service due to hash collisions.
Patch by David Malcolm with some modifications by the expat project.
diff --git a/Modules/expat/pyexpatns.h b/Modules/expat/pyexpatns.h
index 7fbd341..2f2f4f9 100644
--- a/Modules/expat/pyexpatns.h
+++ b/Modules/expat/pyexpatns.h
@@ -97,6 +97,7 @@
#define XML_SetEntityDeclHandler PyExpat_XML_SetEntityDeclHandler
#define XML_SetExternalEntityRefHandler PyExpat_XML_SetExternalEntityRefHandler
#define XML_SetExternalEntityRefHandlerArg PyExpat_XML_SetExternalEntityRefHandlerArg
+#define XML_SetHashSalt PyExpat_XML_SetHashSalt
#define XML_SetNamespaceDeclHandler PyExpat_XML_SetNamespaceDeclHandler
#define XML_SetNotationDeclHandler PyExpat_XML_SetNotationDeclHandler
#define XML_SetNotStandaloneHandler PyExpat_XML_SetNotStandaloneHandler