ospfd: Update route in zebra when tag changes

Signed-off-by: Christian Franke <chris@opensourcerouting.org>
diff --git a/ospfd/ospf_ase.c b/ospfd/ospf_ase.c
index 74c1711..fe40b10 100644
--- a/ospfd/ospf_ase.c
+++ b/ospfd/ospf_ase.c
@@ -598,6 +598,10 @@
        if (op->ifindex != newop->ifindex)
 	 return 0;
      }
+
+   if (or->u.ext.tag != newor->u.ext.tag)
+     return 0;
+
    return 1;
 }