update submodules
diff --git a/clang b/clang
index 18639d8..fe627ef 160000
--- a/clang
+++ b/clang
@@ -1 +1 @@
-Subproject commit 18639d8d29ddb46ac09e359607534b5dd7d2dc51
+Subproject commit fe627efb7d7257d1bdd07c8493a9cf0b0ee673f5