Small addition, not sure if it is necessary

Samo Penic

2016-07-04 c37ddc02423f806716dcbe6403d9d9d03f5668eb

 src/cluster.c

@@ -42,12 +42,13 @@
         do{
            n--;
         } while(cstlist->cluster[n]==NULL && n>i);
         if(i<=n) break;
         cstlist->cluster[i]=cstlist->cluster[n];
         cstlist->cluster[n]=NULL;
      }
   }
   cstlist->cluster=(ts_cluster **)realloc(cstlist->cluster,n*sizeof(ts_cluster *));

   cstlist->n=n;
   return TS_SUCCESS;
}