functional-tester/tester: fix goword errors

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

tools/functional-tester/tester/checks.go

@@ -99,8 +99,7 @@ func (hc *hashChecker) Check() error {
 type leaseChecker struct {
 	logger *zap.Logger
 
-	// TODO: use Member
-	endpoint string
+	endpoint string // TODO: use Member
 
 	ls          *leaseStresser
 	leaseClient pb.LeaseClient

tools/functional-tester/tester/stress_key.go

@@ -35,8 +35,7 @@ import (
 type keyStresser struct {
 	logger *zap.Logger
 
-	// TODO: use Member
-	Endpoint string
+	Endpoint string // TODO: use Member
 
 	keySize           int
 	keyLargeSize      int