Fixed: Metadata files not being created after rescan

(cherry picked from commit e2ff089232765b876719b324e0543441e0bd1521)

src/Lidarr.Api.V1/Artist/ArtistModule.cs

@@ -290,7 +290,10 @@ namespace Lidarr.Api.V1.Artist
 
         public void Handle(MediaCoversUpdatedEvent message)
         {
-            BroadcastResourceChange(ModelAction.Updated, GetArtistResource(message.Artist));
+            if (message.Updated)
+            {
+                BroadcastResourceChange(ModelAction.Updated, GetArtistResource(message.Artist));
+            }
         }
     }
 }

src/NzbDrone.Core/MediaCover/MediaCoverService.cs

@@ -290,10 +290,7 @@ namespace NzbDrone.Core.MediaCover
                 updated |= EnsureAlbumCovers(album);
             }
 
-            if (updated)
-            {
-                _eventAggregator.PublishEvent(new MediaCoversUpdatedEvent(message.Artist));
-            }
+            _eventAggregator.PublishEvent(new MediaCoversUpdatedEvent(message.Artist, updated));
         }
 
         public void HandleAsync(ArtistDeletedEvent message)
@@ -310,10 +307,8 @@ namespace NzbDrone.Core.MediaCover
             if (message.DoRefresh)
             {
                 var updated = EnsureAlbumCovers(message.Album);
-                if (updated)
-                {
-                    _eventAggregator.PublishEvent(new MediaCoversUpdatedEvent(message.Album));
-                }
+
+                _eventAggregator.PublishEvent(new MediaCoversUpdatedEvent(message.Album, updated));
             }
         }
 

src/NzbDrone.Core/MediaCover/MediaCoversUpdatedEvent.cs

@@ -7,15 +7,18 @@ namespace NzbDrone.Core.MediaCover
     {
         public Artist Artist { get; set; }
         public Album Album { get; set; }
+        public bool Updated { get; set; }
 
-        public MediaCoversUpdatedEvent(Artist artist)
+        public MediaCoversUpdatedEvent(Artist artist, bool updated)
         {
             Artist = artist;
+            Updated = updated;
         }
 
-        public MediaCoversUpdatedEvent(Album album)
+        public MediaCoversUpdatedEvent(Album album, bool updated)
         {
             Album = album;
+            Updated = updated;
         }
     }
 }