Update comments to use unreachable instead of llvm.trap, as implemented now

llvm-svn: 227502
diff --git a/llvm/lib/CodeGen/WinEHPrepare.cpp b/llvm/lib/CodeGen/WinEHPrepare.cpp
index 48b3585..52bca67 100644
--- a/llvm/lib/CodeGen/WinEHPrepare.cpp
+++ b/llvm/lib/CodeGen/WinEHPrepare.cpp
@@ -79,7 +79,7 @@
   if (!isMSVCPersonality(Pers))
     return DwarfPrepare->runOnFunction(Fn);
 
-  // FIXME: Cleanups are unimplemented. Replace them with calls to @llvm.trap.
+  // FIXME: Cleanups are unimplemented. Replace them with unreachable.
   if (Resumes.empty())
     return false;