[BUG] peers: don't pre-allocate 65000 connections to each peer

This made sense a long time ago but since the maxconn is dynamically
computed from the tracking tables, it does not make any sense anymore
and will harm future changes.
diff --git a/src/cfgparse.c b/src/cfgparse.c
index 1889654..f098a31 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -1262,7 +1262,7 @@
 				curpeers->peers_fe->last_change = now.tv_sec;
 				curpeers->peers_fe->id = strdup(args[1]);
 				curpeers->peers_fe->cap = PR_CAP_FE;
-				curpeers->peers_fe->maxconn = 65000;
+				curpeers->peers_fe->maxconn = 0;
 				curpeers->peers_fe->conn_retries = CONN_RETRIES;
 				curpeers->peers_fe->timeout.connect = 5000;
 				curpeers->peers_fe->accept = peer_accept;