Added mbedtls_net_close and use it in ssl_fork_server to correctly
disassociate the client socket from the parent process and the server
socket from the child process.
diff --git a/programs/ssl/ssl_fork_server.c b/programs/ssl/ssl_fork_server.c
index 80407e4..851bc05 100644
--- a/programs/ssl/ssl_fork_server.c
+++ b/programs/ssl/ssl_fork_server.c
@@ -254,6 +254,7 @@
         if( pid != 0 )
         {
             mbedtls_printf( " ok\n" );
+            mbedtls_net_close( &client_fd );
 
             if( ( ret = mbedtls_ctr_drbg_reseed( &ctr_drbg,
                                          (const unsigned char *) "parent",
@@ -266,7 +267,7 @@
             continue;
         }
 
-        mbedtls_net_init( &listen_fd );
+        mbedtls_net_close( &listen_fd );
 
         pid = getpid();