[pitivi] render: Remove one-liner method

[Thibault Saunier <tsaunier src gnome org>]

commit 0724c999e992816eff2084a4e16a234d97000097
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Mon Jun 1 22:34:55 2020 +0200

    render: Remove one-liner method

 pitivi/render.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/pitivi/render.py b/pitivi/render.py
index ba0f42e7..2b5fc0ec 100644
--- a/pitivi/render.py
+++ b/pitivi/render.py
@@ -767,22 +767,22 @@ class RenderDialog(Loggable):
 
             self._set_encoding_profile(old_profile, True)
 
-        def factory(x):
-            return Encoders().factories_by_name.get(getattr(self.project, x))
-
         self.project.set_container_profile(encoding_profile)
         self._setting_encoding_profile = True
 
-        if not set_combo_value(self.muxer_combo, factory("muxer")):
+        muxer = Encoders().factories_by_name.get(self.project.muxer)
+        if not set_combo_value(self.muxer_combo, muxer):
             rollback()
             return
 
         self.update_available_encoders()
         self._update_valid_audio_restrictions(Gst.ElementFactory.find(self.project.aencoder))
         self._update_valid_video_restrictions(Gst.ElementFactory.find(self.project.vencoder))
+        aencoder = Encoders().factories_by_name.get(self.project.aencoder)
+        vencoder = Encoders().factories_by_name.get(self.project.vencoder)
         for i, (combo, name, value) in enumerate([
-                (self.audio_encoder_combo, "aencoder", factory("aencoder")),
-                (self.video_encoder_combo, "vencoder", factory("vencoder")),
+                (self.audio_encoder_combo, "aencoder", aencoder),
+                (self.video_encoder_combo, "vencoder", vencoder),
                 (self.sample_rate_combo, "audiorate", self.project.audiorate),
                 (self.channels_combo, "audiochannels", self.project.audiochannels),
                 (self.frame_rate_combo, "videorate", self.project.videorate)]):