commit 916b512b4b6dfeb1bb2929514c26e8595f22a1da
Author: Paolo Bonzini <pbonzini@redhat.com>
Date:   Fri Oct 2 01:02:01 2009 +0200

    hack to handle backwards compatibility

diff --git a/src/remote_internal.c b/src/remote_internal.c
index 7db59d1..e9fea0e 100644
--- a/src/remote_internal.c
+++ b/src/remote_internal.c
@@ -2534,6 +2534,15 @@ done:
     return rv;
 }
 
+
+static bool_t
+xdr_remote_domain_migrate_perform_ret_optional (XDR *xdrs, remote_domain_migrate_perform_ret *objp)
+{
+    if (!xdr_remote_domain_migrate_perform_ret (xdrs, objp))
+	objp->code = 0;
+    return TRUE;
+}
+
 static int
 remoteDomainMigratePerform (virDomainPtr domain,
                             const char *cookie,
@@ -2561,7 +2570,7 @@ remoteDomainMigratePerform (virDomainPtr domain,
     memset (&ret, 0, sizeof (ret));
     if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_MIGRATE_PERFORM,
               (xdrproc_t) xdr_remote_domain_migrate_perform_args, (char *) &args,
-              (xdrproc_t) xdr_remote_domain_migrate_perform_ret, (char *) &ret) == -1)
+              (xdrproc_t) xdr_remote_domain_migrate_perform_ret_optional, (char *) &ret) == -1)
         goto done;
 
     rv = ret.code;