Changes malloc to calloc to avoid uninitialized memory issue
that randomly shows up.


diff make_lattice.c ../..
20,21c20
<   /* SPEC change malloc to calloc */
<   lattice = (site *)calloc( sites_on_node, sizeof(site) );
---
>   lattice = (site *)malloc( sites_on_node * sizeof(site) );

Accepted for use with base and peak runs.

