[Path Config] Properly prune the database

When cleaning up the path list, actually remove the pruned entries from
the Core Data storage, so they don't end up resolving to broken
bookmarks in the player, breaking playback on migrated configurations.

Signed-off-by: Christopher Snowhill <kode54@gmail.com>

Preferences/Preferences/SandboxPathBehaviorController.m

@@ -106,9 +106,20 @@
 }
 
 - (void)removeStaleEntries {
+	BOOL updated = NO;
+	NSPersistentContainer *pc = [NSClassFromString(@"PlaylistController") sharedPersistentContainer];
 	for(NSDictionary *entry in [[self arrangedObjects] copy]) {
 		if([[entry objectForKey:@"valid"] isEqualToString:NSLocalizedPrefString(@"ValidNo")]) {
 			[self removeObject:entry];
+			[pc.viewContext deleteObject:[entry objectForKey:@"token"]];
+			updated = YES;
+		}
+	}
+	if(updated) {
+		NSError *error;
+		[pc.viewContext save:&error];
+		if(error) {
+			ALog(@"Error saving after removing stale bookmarks: %@", [error localizedDescription]);
 		}
 	}
 }