smatch clean rtld

*** 1007,1017 ****
                   * Determine whether this pathname has already been recorded.
                   */
                  if (pnavl_recorded(&capavl, name, hash, &where))
                          continue;
  
!                 if ((pnp = calloc(sizeof (PathNode), 1)) != NULL) {
                          pnp->pn_name = name;
                          pnp->pn_hash = hash;
                          avl_insert(capavl, pnp, where);
                  }
          }
--- 1007,1017 ----
                   * Determine whether this pathname has already been recorded.
                   */
                  if (pnavl_recorded(&capavl, name, hash, &where))
                          continue;
  
!                 if ((pnp = calloc(1, sizeof (PathNode))) != NULL) {
                          pnp->pn_name = name;
                          pnp->pn_hash = hash;
                          avl_insert(capavl, pnp, where);
                  }
          }