From 38b8cd11714a41f70a47faab221dd9ba1a2c7c7d Mon Sep 17 00:00:00 2001
From: Gyedo Jeon <gyedojeon@gmail.com>
Date: Thu, 14 May 2009 20:59:59 +0000
Subject: [PATCH] Fixed an error of not checking cam is None

---
 direct/src/showbase/ShowBase.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/direct/src/showbase/ShowBase.py b/direct/src/showbase/ShowBase.py
index a6ab26e8dd..e7ac65472b 100644
--- a/direct/src/showbase/ShowBase.py
+++ b/direct/src/showbase/ShowBase.py
@@ -2472,7 +2472,7 @@ class WindowControls:
             mouseKeyboard=None, closeCmd=lambda: 0):
         self.win = win
         self.camera = cam
-        if camNode is None:
+        if camNode is None and cam is not None:
             camNode = cam.node()
         self.camNode = camNode
         self.camera2d = cam2d