[MM-61499] Fix errcheck issues in server/channels/app/slashcommands/helper_test.go (#30880)

server/channels/app/slashcommands/command_invite_people_test.go

@@ -12,8 +12,7 @@ import (
 )
 
 func TestInvitePeopleProvider(t *testing.T) {
-	th := setup(t).initBasic()
-	defer th.tearDown()
+	th := setup(t).initBasic(t)
 
 	th.App.UpdateConfig(func(cfg *model.Config) {
 		*cfg.EmailSettings.SendEmailNotifications = true
@@ -22,7 +21,7 @@ func TestInvitePeopleProvider(t *testing.T) {
 
 	cmd := InvitePeopleProvider{}
 
-	notTeamUser := th.createUser()
+	notTeamUser := th.createUser(t)
 
 	// Test without required permissions
 	args := &model.CommandArgs{