[pitivi] project: Fix method to return True when nothing to do

[Thibault Saunier <tsaunier src gnome org>]

commit 800db78c12dd95856e93b2a588c4f70973d85752
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Mon Jun 1 22:49:23 2020 +0200

    project: Fix method to return True when nothing to do

 pitivi/project.py | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)
---
diff --git a/pitivi/project.py b/pitivi/project.py
index 7bdae9f8..d9819cd5 100644
--- a/pitivi/project.py
+++ b/pitivi/project.py
@@ -1489,11 +1489,11 @@ class Project(Loggable, GES.Project):
     def set_container_profile(self, container_profile):
         """Sets @container_profile as new profile if usable.
 
-        Attributes:
-            profile (Gst.EncodingProfile): The Gst.EncodingContainerProfile to use
+        Args:
+            container_profile (GstPbutils.EncodingContainerProfile): The profile to use.
         """
-        if container_profile == self.container_profile:
-            return False
+        if self.container_profile.is_equal(container_profile):
+            return True
 
         muxer = self._get_element_factory_name(
             Encoders().muxers, container_profile)
@@ -1501,7 +1501,10 @@ class Project(Loggable, GES.Project):
             muxer = Encoders().default_muxer
         container_profile.set_preset_name(muxer)
 
-        video_profile = audio_profile = vencoder = aencoder = None
+        video_profile = None
+        audio_profile = None
+        vencoder = None
+        aencoder = None
         for profile in container_profile.get_profiles():
             if isinstance(profile, GstPbutils.EncodingVideoProfile):
                 video_profile = profile