Always print valid config even if setting fails

cmd/yggdrasilconf/main.go

@@ -121,8 +121,7 @@ func main() {
 		case reflect.Struct:
 			field := item.FieldByName(name)
 			if !field.IsValid() {
-				fmt.Println("Invalid option:", strings.Join(flags[1:len(flags)-1], " "))
-				os.Exit(1)
+				break
 			}
 			switch field.Kind() {
 			case reflect.String:
@@ -137,14 +136,12 @@ func main() {
 				if uint, uerr := strconv.ParseUint(value, 10, 64); uerr == nil {
 					field.SetUint(uint)
 				}
-			default:
-				fmt.Println("Invalid type for option:", name)
-				os.Exit(1)
 			}
 		case reflect.Map:
 			intf := item.Interface().(map[string]interface{})
 			intf[name] = value
 		}
+	}
 	var bs []byte
 	if *usejson {
 		if bs, err = json.Marshal(cfg); err == nil {
@@ -155,8 +152,4 @@ func main() {
 			fmt.Println(string(bs))
 		}
 	}
-		os.Exit(0)
-	default:
-		os.Exit(1)
-	}
 }