Fix warnings.

Signed-off-by: Florent Bruneau <florent.bruneau@polytechnique.org>
git-svn-id: svn+ssh://murphy/home/svn/banana/trunk@297 9869982d-c50d-0410-be91-f2a2ec7c7c7b

diff --git a/banana/tree.inc.php b/banana/tree.inc.php
index 9031c29..667925f 100644 (file)
--- a/banana/tree.inc.php
+++ b/banana/tree.inc.php
@@ -92,7 +92,7 @@ class BananaTree
      */
     public function &show()
     {
-        if (!is_null($this->displaid)) {
+        if (!is_null($this->displaid) || is_null($this->data)) {
             return $this->displaid;
         }
         static $t_e, $u_h, $u_ht, $u_vt, $u_l, $u_f, $r_h, $r_ht, $r_vt, $r_l, $r_f;