Update Sizzle: Fixes a fail in traversing and one in ajax.

diff --git a/src/sizzle b/src/sizzle
index e82e70ed2e8b79daf9791a14fa8ff67cfb97f187..80fc773d20eb169334114ea1fac3083eeb3a98a7 160000 (submodule)
--- a/src/sizzle
+++ b/src/sizzle
@@ -1 +1 @@
-Subproject commit e82e70ed2e8b79daf9791a14fa8ff67cfb97f187
+Subproject commit 80fc773d20eb169334114ea1fac3083eeb3a98a7