Ns_server_stats doesn't always exit when sigar dies which leads to a deadlock

diff --git a/programs/sigar_port.c b/programs/sigar_port.c

index c98e4786..a7517917 100644

--- a/programs/sigar_port.c

+++ b/programs/sigar_port.c

@@ -298,7 +298,7 @@ int main(int argc, char *argv[])

         }

         procs_stale = populate_interesting_procs(sigar, procs, procs_count, &reply);

-

+        return 0;

         fwrite(&reply, sizeof(reply), 1, stdout);

         fflush(stdout);

     }

(n_0@node0.localhost)26> erlang:process_info(whereis(ns_server_stats), [current_function, message_queue_len]).

[{current_function,{ns_server_stats,recv_data_loop,2}},

 {message_queue_len,28}]