Fixed the max_occupancy double -> int

Samo Penic

2019-07-04 42190fb471120cd6aafc9227081c57f7a0aca68e

 src/cell.c

@@ -142,6 +142,7 @@
                cell_occupation=clist->cell[neigh_cidx]->nvertex;
          //      fprintf(stderr, "cell_occupation=%i\n",cell_occupation);
                if(cell_occupation>clist->max_occupancy){
         ts_fprintf(stderr,"max occupancy= %d, cell occupation= %d", clist->max_occupancy, cell_occupation);
                    fatal("Neighbouring cell occupation more than set max_occupancy value.",2000);
                }
// Now we check whether we didn't come close to some other vertices in the same