fix linter error in if-else statement

Author: amanakin

client.go

@@ -115,9 +115,10 @@ func NewClient(config *ClientConfig) (*Client, error) {
 
 	if len(config.TURNServerAddr) > 0 {
 		turnServ, err = config.Net.ResolveUDPAddr("udp4", config.TURNServerAddr)
-		if err != nil && !config.IgnoreTURNResolveErrors {
-			return nil, err
-		} else if err != nil {
+		if err != nil {
+			if !config.IgnoreTURNResolveErrors {
+				return nil, err
+			}
 			log.Debugf("Failed to resolve TURN server %s: %s", config.TURNServerAddr, err)
 		} else {
 			log.Debugf("Resolved TURN server %s to %s", config.TURNServerAddr, turnServ)