Remove the write-only variable phent. We currently do not check the

size of the program header's entries.

Reported by:	adrian (by using gcc 4.9)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week

sys/vm/vm_page.c

@@ -1756,6 +1756,7 @@ vm_page_alloc(vm_object_t object, vm_pindex_t pindex, int req)
 				m->wire_count = 0;
 			}
 			m->object = NULL;
+			m->oflags = VPO_UNMANAGED;
 			vm_page_free(m);
 			return (NULL);
 		}