4574 get_clones_stat does not call zap_count in non-debug kernel
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Marcel Telka <marcel@telka.sk>
Approved by:

*** 20,29 ****
--- 20,30 ----
   */
  /*
   * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright (c) 2013 by Delphix. All rights reserved.
   * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+  * Copyright (c) 2014 RackTop Systems.
   */
  
  #include <sys/dmu_objset.h>
  #include <sys/dsl_dataset.h>
  #include <sys/dsl_dir.h>
*** 1362,1372 ****
           * There may be missing entries in ds_next_clones_obj
           * due to a bug in a previous version of the code.
           * Only trust it if it has the right number of entries.
           */
          if (ds->ds_phys->ds_next_clones_obj != 0) {
!                 ASSERT0(zap_count(mos, ds->ds_phys->ds_next_clones_obj,
                      &count));
          }
          if (count != ds->ds_phys->ds_num_children - 1)
                  goto fail;
          for (zap_cursor_init(&zc, mos, ds->ds_phys->ds_next_clones_obj);
--- 1363,1373 ----
           * There may be missing entries in ds_next_clones_obj
           * due to a bug in a previous version of the code.
           * Only trust it if it has the right number of entries.
           */
          if (ds->ds_phys->ds_next_clones_obj != 0) {
!                 VERIFY0(zap_count(mos, ds->ds_phys->ds_next_clones_obj,
                      &count));
          }
          if (count != ds->ds_phys->ds_num_children - 1)
                  goto fail;
          for (zap_cursor_init(&zc, mos, ds->ds_phys->ds_next_clones_obj);