Make pmap_enter respect the PMAP_CANFAIL flag.  With and essential memory leak plug from drahn@
Make pmap_enter respect the PMAP_CANFAIL flag.  With and essential
memory leak plug from drahn@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars