wrap test triggered bug in pnacl llvm
wrap test triggered bug in pnacl llvm

Not really interesting in working around it, just changed the test
enough to avoid it.

ronen/Halide,ronen/Halide,ronen/Halide,jiawen/Halide,kgnk/Halide,psuriana/Halide,jiawen/Halide,ronen/Halide,jiawen/Halide,kgnk/Halide,psuriana/Halide,kgnk/Halide,kgnk/Halide,psuriana/Halide,jiawen/Halide,kgnk/Halide,kgnk/Halide,psuriana/Halide,kgnk/Halide,ronen/Halide,jiawen/Halide,ronen/Halide,ronen/Halide,psuriana/Halide,jiawen/Halide,psuriana/Halide,jiawen/Halide,kgnk/Halide,ronen/Halide,psuriana/Halide