[pitivi] pipeline: Simplify logging of obtained duration value

[Mathieu Duponchelle <mathieudu src gnome org>]

commit bf0ea76a740f16106e3ee4c570fb3d02d99bbcb7
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Mon Jan 20 22:23:09 2014 +0100

    pipeline: Simplify logging of obtained duration value

 pitivi/utils/misc.py     |    2 ++
 pitivi/utils/pipeline.py |    5 +----
 2 files changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/pitivi/utils/misc.py b/pitivi/utils/misc.py
index 86be75c..2e8dbdf 100644
--- a/pitivi/utils/misc.py
+++ b/pitivi/utils/misc.py
@@ -62,6 +62,8 @@ def between(a, b, c):
 
 
 def format_ns(time):
+    if time is None:
+        return None
     if time == Gst.CLOCK_TIME_NONE:
         return "CLOCK_TIME_NONE"
 
diff --git a/pitivi/utils/pipeline.py b/pitivi/utils/pipeline.py
index 3024b2c..f947eac 100644
--- a/pitivi/utils/pipeline.py
+++ b/pitivi/utils/pipeline.py
@@ -307,10 +307,7 @@ class SimplePipeline(Signallable, Loggable):
         self.log("format %r", format)
 
         dur = self._getDuration(format)
-        if dur is None:
-            self.info("Invalid duration: None")
-        else:
-            self.log("Got duration %s", format_ns(dur))
+        self.log("Got duration %s", format_ns(dur))
         if self._duration != dur:
             self.emit("duration-changed", dur)