improve readibility

Author: ndyakov

main_test.go

@@ -118,7 +118,8 @@ var _ = BeforeSuite(func() {
 			sentinelSlave2Port, "--slaveof", "127.0.0.1", sentinelMasterPort)
 		Expect(err).NotTo(HaveOccurred())
 
-		Expect(startCluster(ctx, cluster)).NotTo(HaveOccurred())
+		err = startCluster(ctx, cluster)
+		Expect(err).NotTo(HaveOccurred())
 	} else {
 		redisPort = rediStackPort
 		redisAddr = rediStackAddr