Add a triple to this test to hopefully get it passing on i386-freebsd.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146795 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGenCXX/debug-info-fwd-ref.cpp

-// RUN: %clang_cc1 -emit-llvm -g %s -o - | FileCheck %s
+// RUN: %clang_cc1 -emit-llvm -g -triple x86_64-apple-darwin %s -o - | FileCheck %s
 
 struct baz {
     int h;