Update to submodule.

diff --git a/gcc.git b/gcc.git
index 0e6d3dd..72aaef0 160000 (submodule)
--- a/gcc.git
+++ b/gcc.git
@@ -1 +1 @@
-Subproject commit 0e6d3ddb3220f8e9fe4bf7178b3114c0bbbccf4e
+Subproject commit 72aaef024c3b41d6b99a86d710a79b99df7bc526