Fix for unexpected JSON array responses

Signed-off-by: Andy Lo-A-Foe <andy.loafoe@gmail.com>

dicom/config_service_store_service.go

@@ -62,13 +62,16 @@ func (c *ConfigService) GetStoreService(options ...OptionFunc) (*SCPConfig, *Res
 		return nil, nil, err
 	}
 	req.Header.Set("Content-Type", "application/json")
-	var service SCPConfig
+	var service []SCPConfig // This will change. The API always return a JSON array now
 	resp, err := c.client.do(req, &service)
 	if (err != nil && err != io.EOF) || resp == nil {
 		if resp == nil && err != nil {
 			err = fmt.Errorf("GetStoreService: %w", ErrEmptyResult)
 		}
 		return nil, resp, err
 	}
-	return &service, resp, nil
+	if len(service) == 0 {
+		return nil, resp, ErrEmptyResult
+	}
+	return &service[0], resp, nil
 }