[gnome-sound-recorder] preferences: fix channels selection

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

commit 0eba93cad491849eaf6b715af7ce822fc670678e
Author: Julian Richen <julian richen io>
Date:   Sat Apr 4 15:12:30 2020 -0400

    preferences: fix channels selection
    
    When refactoring the code base GSetting options are now called
    differently. This fix properly references the channels option so
    users can pick Mono or Stereo.

 src/record.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/record.js b/src/record.js
index 632db3d..cc547c5 100644
--- a/src/record.js
+++ b/src/record.js
@@ -293,7 +293,7 @@ var Record = class Record {
     _getChannels() {
 
         let channels = null;
-        let channelsPref = Settings.channel;
+        let channelsPref = Settings.settings.channel;
 
         switch (channelsPref) {
         case Channels.MONO: