make the C compiler happy when a job is not available
make the C compiler happy when a job is not available

Ignore-this: 766ca5e9b5307dc42533daf6dd8ee2d8

darcs-hash:20120719112748-c41ad-f4096368a355c432b73b4869656b8b02f627b1f8.gz

avsm/lwt-OLD,avsm/lwt-OLD