Fixing my mistakes, because I had a lapse in judgement...

Fix compilation errors in main.go and dxcc client

- Corrected a syntax error in spotAggregator.
- Fixed incorrect dbClient access in lotw.Client.
- Updated dxcc.Client Close method to return an error.

Author: user00265

backend/dxcc/client.go

@@ -234,13 +234,14 @@ func NewClient(ctx context.Context, cfg config.Config, dbClient db.DBClient) (*C
 }
 
 // Close gracefully shuts down the DXCC client's resources.
-func (c *Client) Close() {
+func (c *Client) Close() error {
 	if c.updateStop != nil {
 		close(c.updateStop)
 		<-c.updateDone
 		c.updateStop = nil
 		c.updateDone = nil
 	}
+	return c.dbClient.Close()
 }
 
 // createTables creates the DXCC tables if they don't exist.

main.go

@@ -133,7 +133,7 @@ func RunApplication(ctx context.Context, args []string) int {
 	// Perform cleanup for clients that were not closed by gracefulShutdown
 	logging.Info("Performing final client cleanup...")
 	lotwClient.StopUpdater()
-	if err := lotwClient.dbClient.Close(); err != nil {
+	if err := lotwClient.DbClient.Close(); err != nil {
 		logging.Error("Error closing LoTW DB client: %v", err)
 	}
 	if err := dxccClient.Close(); err != nil {
@@ -544,7 +544,6 @@ func spotAggregator(ctx context.Context, spotChannels []<-chan spot.Spot, cache
 				logging.Debug("Aggregator added enhanced spot from %s (spotter=%s)", enhancedSpot.Source, enhancedSpot.Spotter)
 			}
 		}
-		}
 	}
 }