[pitivi] pipeline: Fix check if we are rendering

[Thibault Saunier <tsaunier src gnome org>]

commit ad659e3512a5215d982b864759406f93f660c866
Author: Thibault Saunier <tsaunier gnome org>
Date:   Sat Nov 12 13:58:04 2016 -0300

    pipeline: Fix check if we are rendering

 pitivi/utils/pipeline.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/utils/pipeline.py b/pitivi/utils/pipeline.py
index 323aeb2..27db419 100644
--- a/pitivi/utils/pipeline.py
+++ b/pitivi/utils/pipeline.py
@@ -636,4 +636,4 @@ class Pipeline(GES.Pipeline, SimplePipeline):
 
     def _rendering(self):
         mask = GES.PipelineFlags.RENDER | GES.PipelineFlags.SMART_RENDER
-        return self._pipeline.get_mode() & mask
+        return self._pipeline.get_mode() & mask != 0