[Bf-blender-cvs] [28d9641] master: Fix T42619: python crash: bpy.context.screen.is_animation_playing

[julianeisel]

Commit: 28d9641a3d441f6f15083e7d601216b351a4a7c3
Author: julianeisel
Date:   Mon Nov 17 16:07:28 2014 +0100
Branches: master
https://developer.blender.org/rB28d9641a3d441f6f15083e7d601216b351a4a7c3

Fix T42619: python crash: bpy.context.screen.is_animation_playing

===================================================================

M	source/blender/editors/screen/screen_ops.c

===================================================================

diff --git a/source/blender/editors/screen/screen_ops.c b/source/blender/editors/screen/screen_ops.c
index 454bb3b..f8db196 100644
--- a/source/blender/editors/screen/screen_ops.c
+++ b/source/blender/editors/screen/screen_ops.c
@@ -3525,9 +3525,10 @@ bScreen *ED_screen_animation_playing(const wmWindowManager *wm)
 {
 	wmWindow *window;
 
-	for (window = wm->windows.first; window; window = window->next)
-		if (window->screen->animtimer)
-			return window->screen;
+	if (wm)
+		for (window = wm->windows.first; window; window = window->next)
+			if (window->screen->animtimer)
+				return window->screen;
 	
 	return NULL;
 }