From cae693cb699b46d0554f50cf051d09cb7201ce15 Mon Sep 17 00:00:00 2001
From: Tony S Yu <tsyu80@gmail.com>
Date: Tue, 25 Jun 2013 23:24:06 -0500
Subject: [PATCH] Change QApp default to previous behavior.

---
 skimage/viewer/utils/core.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/skimage/viewer/utils/core.py b/skimage/viewer/utils/core.py
index 3ac0eef3..0a053784 100644
--- a/skimage/viewer/utils/core.py
+++ b/skimage/viewer/utils/core.py
@@ -22,7 +22,7 @@ __all__ = ['init_qtapp', 'start_qtapp', 'RequiredAttr', 'figimage',
            'update_axes_image']
 
 
-global QApp
+QApp = None
 
 
 def init_qtapp():