fix one more this-is-not-a-constant error. test included

llvm-svn: 55609
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index bf7c690..d93a5ec 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -1269,6 +1269,9 @@
   if (Init->getType()->isArrayType())
     return false;
 
+  if (Init->getType()->isFunctionType())
+    return false;
+
   Diag(Init->getExprLoc(), diag::err_init_element_not_constant,
        Init->getSourceRange());
   return true;