Log exception message with audio channel warn

src/NzbDrone.Core/MediaFiles/MediaInfo/MediaInfoFormatter.cs

@@ -494,10 +494,10 @@ namespace NzbDrone.Core.MediaFiles.MediaInfo
                     return positions;
                 }
             }
-            catch (Exception)
+            catch (Exception ex)
             {
                 Logger.Warn()
-                      .Message("Unable to format audio channels using 'AudioChannelPositions', with a value of: '{0}' and '{1}'", audioChannelPositions, mediaInfo.AudioChannelPositionsText)
+                      .Message("Unable to format audio channels using 'AudioChannelPositions', with a value of: '{0}' and '{1}'. Error {2}", audioChannelPositions, mediaInfo.AudioChannelPositionsText, ex.Message)
                       .WriteSentryWarn("UnknownAudioChannelFormat", audioChannelPositions, mediaInfo.AudioChannelPositionsText)
                       .Write();
             }