Update Sizzle: only one assertion is needed for getElementsByClassName

diff --git a/src/sizzle b/src/sizzle
index e60558fd5834f0bc0b9c34023fc3c0766ece6ccb..2b2f7ac6635591aea7a5da28fd5840b8a19ec67b 160000 (submodule)
--- a/src/sizzle
+++ b/src/sizzle
@@ -1 +1 @@
-Subproject commit e60558fd5834f0bc0b9c34023fc3c0766ece6ccb
+Subproject commit 2b2f7ac6635591aea7a5da28fd5840b8a19ec67b