dccp: getting kernel segfaults, back out recent added features

*** 258,269 ****
                  dccps->dccps_sc[i] = kmem_zalloc(sizeof (dccp_stats_cpu_t),
                      KM_SLEEP);
          }
  
          /* Kernel statistics */
!         dccps->dccps_kstat = dccp_kstat2_init(stackid);
!         dccps->dccps_mibkp = dccp_kstat_init(stackid);
  
          /* Driver major number */
          major = mod_name_to_major(INET_NAME);
          error = ldi_ident_from_major(major, &dccps->dccps_ldi_ident);
          ASSERT(error == 0);
--- 258,269 ----
                  dccps->dccps_sc[i] = kmem_zalloc(sizeof (dccp_stats_cpu_t),
                      KM_SLEEP);
          }
  
          /* Kernel statistics */
!         //dccps->dccps_kstat = dccp_kstat2_init(stackid);
!         //dccps->dccps_mibkp = dccp_kstat_init(stackid);
  
          /* Driver major number */
          major = mod_name_to_major(INET_NAME);
          error = ldi_ident_from_major(major, &dccps->dccps_ldi_ident);
          ASSERT(error == 0);
*** 301,310 ****
--- 301,312 ----
          dccps->dccps_bind_fanout = NULL;
  
          /* Kernel statistics */
          dccp_kstat_fini(stackid, dccps->dccps_mibkp);
          dccps->dccps_mibkp = NULL;
+         dccp_kstat2_fini(stackid, dccps->dccps_kstat);
+         dccps->dccps_kstat = NULL;
  
          ldi_ident_release(dccps->dccps_ldi_ident);
  
          kmem_free(dccps, sizeof (*dccps));
  }