[vte] Don't leak a FD on error

[Christian Persch <chpe src gnome org>]

commit 1665665bc4b66fe6e8b25466cf4768f026741212
Author: Christian Persch <chpe gnome org>
Date:   Tue Mar 30 21:10:15 2010 +0200

    Don't leak a FD on error

 src/pty.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/pty.c b/src/pty.c
index e59d48a..b3703e8 100644
--- a/src/pty.c
+++ b/src/pty.c
@@ -1203,6 +1203,8 @@ failure:
                 close(tmp[1]);
         if (tunnel != -1)
                 close(tunnel);
+        if (_vte_pty_helper_tunnel != -1)
+                close(_vte_pty_helper_tunnel);
 
         _vte_pty_helper_pid = -1;
         _vte_pty_helper_tunnel = -1;