[rhythmbox] encoding-settings: don't create editors with no properties to edit

[Jonathan Matthew <jmatthew src gnome org>]

commit bc06095a6438ec997da57609c6e645f4b8582b0d
Author: Jonathan Matthew <jonathan d14n org>
Date:   Sat Aug 5 20:19:24 2017 +1000

    encoding-settings: don't create editors with no properties to edit
    
    https://bugzilla.gnome.org/show_bug.cgi?id=785304

 widgets/rb-encoding-settings.c |   38 ++++++++++++++++++++------------------
 1 files changed, 20 insertions(+), 18 deletions(-)
---
diff --git a/widgets/rb-encoding-settings.c b/widgets/rb-encoding-settings.c
index d3949ee..772d686 100644
--- a/widgets/rb-encoding-settings.c
+++ b/widgets/rb-encoding-settings.c
@@ -159,24 +159,26 @@ update_property_editor_for_preset (RBEncodingSettings *settings, const char *med
                profile_settings =
                        rb_gst_encoding_profile_get_settings (profile,
                                                              encoding_styles[style].style);
-               settings->priv->encoder_property_editor =
-                       rb_object_property_editor_new (G_OBJECT (settings->priv->encoder_element),
-                                                      profile_settings);
-               g_strfreev (profile_settings);
-               gst_encoding_profile_unref (profile);
-
-               settings->priv->profile_changed_id =
-                       g_signal_connect (settings->priv->encoder_property_editor,
-                                         "changed",
-                                         G_CALLBACK (profile_changed_cb),
-                                         settings);
-
-               gtk_grid_attach (GTK_GRID (settings->priv->encoder_property_holder),
-                                settings->priv->encoder_property_editor,
-                                0, 0, 1, 1);
-               gtk_widget_show_all (settings->priv->encoder_property_editor);
-
-               settings->priv->preset_name = g_strdup (preset);
+               if (profile_settings != NULL) {
+                       settings->priv->encoder_property_editor =
+                               rb_object_property_editor_new (G_OBJECT (settings->priv->encoder_element),
+                                                              profile_settings);
+                       g_strfreev (profile_settings);
+                       gst_encoding_profile_unref (profile);
+
+                       settings->priv->profile_changed_id =
+                               g_signal_connect (settings->priv->encoder_property_editor,
+                                                 "changed",
+                                                 G_CALLBACK (profile_changed_cb),
+                                                 settings);
+
+                       gtk_grid_attach (GTK_GRID (settings->priv->encoder_property_holder),
+                                        settings->priv->encoder_property_editor,
+                                        0, 0, 1, 1);
+                       gtk_widget_show_all (settings->priv->encoder_property_editor);
+
+                       settings->priv->preset_name = g_strdup (preset);
+               }
        }
 }