Update Sizzle: Fixes fail in ajax module and Safari 5.0

diff --git a/src/sizzle b/src/sizzle
index fb50e0dbef448934ed1a11f3a46ab262587d36c6..97128a76c3cf06732db953b1f9ffd6b5d2cca698 160000 (submodule)
--- a/src/sizzle
+++ b/src/sizzle
@@ -1 +1 @@
-Subproject commit fb50e0dbef448934ed1a11f3a46ab262587d36c6
+Subproject commit 97128a76c3cf06732db953b1f9ffd6b5d2cca698