gnet_stats_finish_copy — finish dumping procedure
| int gnet_stats_finish_copy ( | struct gnet_dump * d ); | 
   Corrects the length of the top level TLV to include all TLVs added
   by gnet_stats_copy_XXX calls. Adds the backward compatibility TLVs
   if gnet_stats_start_copy_compat was used and releases the statistics
   lock.
   
Returns 0 on success or -1 with the statistic lock released if the room in the socket buffer was not sufficient.