Index: src/lib/Libifl/tcp_dis.c
===================================================================
--- src/lib/Libifl/tcp_dis.c	(revision 5269)
+++ src/lib/Libifl/tcp_dis.c	(revision 5270)
@@ -797,12 +797,19 @@
   {
   struct tcp_chan *tcp;
 
+  /* On startup tcparray may not yet be initialized. check it */
+  if (tcparray == NULL)
+    return;
+
+  if (fd > tcparraymax)
+    return;
+
   tcp = tcparray[fd];
-  if(tcp != NULL)
+  if (tcp != NULL)
     {
-    if(tcp->readbuf.tdis_thebuf != NULL)
+    if (tcp->readbuf.tdis_thebuf != NULL)
       free(tcp->readbuf.tdis_thebuf);
-    if(tcp->writebuf.tdis_thebuf != NULL)
+    if (tcp->writebuf.tdis_thebuf != NULL)
       free(tcp->writebuf.tdis_thebuf);
 
     free(tcp);