4047 panic from dbuf_free_range() from dmu_free_object() while doing zfs receive
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>

@@ -894,11 +894,11 @@
                         uint64_t prev_snap_txg =
                             dmu_objset_ds(os)->ds_phys->ds_prev_snap_txg;
                         for (uint64_t obj = 0; error == 0;
                             error = dmu_object_next(os, &obj, FALSE,
                             prev_snap_txg))
-                                (void) dmu_free_object(os, obj);
+                                (void) dmu_free_long_object(os, obj);
                         /* sync out all frees */
                         txg_wait_synced(dmu_objset_pool(os), 0);
                         dmu_objset_disown(os, FTAG);
                 }
         }