complete logic for incremental imports

diff --cc src/namestore/gnunet-zoneimport.c
index 763a94c3add0f35d81a9da757f0cd23a2ebee329,763a94c3add0f35d81a9da757f0cd23a2ebee329..493569bcaabda9b8d2c7917c8d672316834e52eb
--- 1/src/namestore/gnunet-zoneimport.c
--- 2/src/namestore/gnunet-zoneimport.c
+++ b/src/namestore/gnunet-zoneimport.c
@@@ -1093,8 -1093,8 +1093,25 @@@ queue (const char *hostname
    }
    else
    {
++    unsigned int rd_count = 0;
++    
++    req->expires = GNUNET_TIME_UNIT_FOREVER_ABS;
++    for (struct Record *rec = req->rec_head;
++       NULL != rec;
++       rec = rec->next)
++    {
++      struct GNUNET_TIME_Absolute at;
++
++      at.abs_value_us = rec->grd.expiration_time;
++      req->expires = GNUNET_TIME_absolute_min (req->expires,
++                                             at);
++      rd_count++;
++    }
++    if (0 == rd_count)
++      req->expires = GNUNET_TIME_UNIT_ZERO_ABS;
      GNUNET_log (GNUNET_ERROR_TYPE_INFO,
--                "Succeeded hot-start with existing data for `%s'\n",
++                "Hot-start with %u existing records for `%s'\n",
++              rd_count,
                  req->label);
    }
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,