Avoid defining __dead if already defined
Avoid defining __dead if already defined

This fixes building on Android.

prahlad37/pick,thoughtbot/pick,thoughtbot/pick,calleerlandsson/pick,calleerlandsson/pick,DBOTW/pick,prahlad37/pick,calleerlandsson/pick,DBOTW/pick,thoughtbot/pick,DBOTW/pick,prahlad37/pick,thoughtbot/pick,prahlad37/pick