In fb_add_to(), do not change *fballoc if realloc() failed
In fb_add_to(), do not change *fballoc if realloc() failed

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs