Sizzle: fix selector in Chrome 21. Fixes #12492.

diff --git a/src/sizzle b/src/sizzle
index 59125c2526d81c5a7c473cbc1ea193d0fe959404..9fb909e71fe0e152f80bf04198cc2b2098756c81 160000 (submodule)
--- a/src/sizzle
+++ b/src/sizzle
@@ -1 +1 @@
-Subproject commit 59125c2526d81c5a7c473cbc1ea193d0fe959404
+Subproject commit 9fb909e71fe0e152f80bf04198cc2b2098756c81