bugfix: fix Go linter warnings

server/src/game/game.go

@@ -4,10 +4,11 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"time"
+
 	"sirlab.de/go/knowyt/engine"
 	"sirlab.de/go/knowyt/fileutil"
 	"sirlab.de/go/knowyt/quote"
-	"time"
 )
 
 func NewGameFromFile(id, fileName string) (*Game, error) {
@@ -18,7 +19,7 @@ func NewGameFromFile(id, fileName string) (*Game, error) {
 
 	var gmJson GameJson
 	if err := json.Unmarshal(jsonBytes, &gmJson); err != nil {
-		return nil, fmt.Errorf("%s: %v\n", fileName, err)
+		return nil, fmt.Errorf("%s: %v", fileName, err)
 	} else {
 		lang := gmJson.Lang
 		if lang == "" {

server/src/game/getGameInfo.go

@@ -3,7 +3,7 @@ package game
 func (gm *Game) GetGameInfo() *GameInfoJson {
 	gameInfo := gm.initGameInfoJson()
 
-	for i, _ := range gameInfo.Players {
+	for i := range gameInfo.Players {
 		quotes := gm.getQuotesInfoByUserId(gameInfo.Players[i].Id)
 		gameInfo.Players[i].NumberOfQuotes = len(quotes)
 	}

server/src/game/getPlayer.go

@@ -13,5 +13,5 @@ func (gm *Game) getPlayerById(id string) (*playerInfo, error) {
 		return &plInfo, nil
 	}
 
-	return nil, fmt.Errorf("player id \"%s\" not found in game\n", id)
+	return nil, fmt.Errorf("player id \"%s\" not found in game", id)
 }

server/src/game/getQuote.go

@@ -2,6 +2,7 @@ package game
 
 import (
 	"fmt"
+
 	"sirlab.de/go/knowyt/quote"
 )
 
@@ -11,7 +12,7 @@ func (gm *Game) getQuoteById(id string) (*quote.Quote, error) {
 
 	quote := gm.quotes[id]
 	if quote == nil {
-		return nil, fmt.Errorf("quote id \"%s\" not found in game\n", id)
+		return nil, fmt.Errorf("quote id \"%s\" not found in game", id)
 	}
 
 	return quote, nil