debuginfo: Cleaned up style issues for pull request.

src/test/debug-info/struct-style-enum.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+// xfail-win32 Broken because of LLVM bug: http://llvm.org/bugs/show_bug.cgi?id=16249
+
 // compile-flags:-Z extra-debug-info
 // debugger:set print union on
 // debugger:break zzz