An explicit if/else is clearer than arithmetic assuming #true is 1,
while the compiler should be able to generate just as optimal code.
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>
Message-id: 147194273830.26836.5875729707953474838.stgit@fimbulvetr.bsc.es
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>