[#199] Use default value if config param is unset after SIGHUP

Signed-off-by: Marina Biryukova <m.biryukova@yadro.com>

cmd/http-gw/main.go

@@ -8,9 +8,9 @@ import (
 
 func main() {
 	globalContext, _ := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM)
-	v := settings()
+	cfg := settings()
 
-	application := newApp(globalContext, v)
+	application := newApp(globalContext, cfg)
 	go application.Serve()
 	application.Wait()
 }