fix: lint S1005, S1009

Author: alespour

cmd/influxd/upgrade/generate_security_script.go

@@ -237,8 +237,8 @@ func (h *securityScriptHelper) checkDbBuckets(meta *meta.Client, databases map[s
 			if h.skipDb(database) { // same check is done in upgradeDatabases()
 				continue
 			}
-			ids, _ := databases[database]
-			if ids == nil || len(ids) == 0 {
+			ids := databases[database]
+			if len(ids) == 0 {
 				h.log.Warn(fmt.Sprintf("warning: no buckets for database [%s] exist in 2.x\n", database))
 				ok = false
 			}