Don't warn about -Wshorten-64-to-32 in unreachable code.  Fixes <rdar://problem/10759934>.  Apparently this is a common idiom in Linux (among other places).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149359 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed