Reading the same halo (DM, AdaptaHOP) causes "malloc(): corrupted top size"

As if readh hasn't deallocated the memory properly. Didn't it???

```
import numpy as np
from pyram.tree import halomodule as hmo
nout=770

hcat = hmo.Halo(nout=nout, is_gal=False, double=False, HOP=False)
hcat = hmo.Halo(nout=nout, is_gal=False, double=False, HOP=False)
```