Avoid sstate->pend_objs wrap.
Avoid sstate->pend_objs wrap.

When returning an object after reexecuting we have to increment
sstate->pend_objs so that the counter doesn't wrap to MAX_UINT.

cmusatyalab/opendiamond,cmusatyalab/opendiamond,cmusatyalab/opendiamond,cmusatyalab/opendiamond,cmusatyalab/opendiamond