通过pprof看到某个方法占用内存过大，大神们如何修改代码让内存占用更少？

pprof占用内存代码如下： 代码 func FirewallRulesGet() ([]FWRule, error) { rules := make([]FWRule, 1000)

u, fwPolicy, err := firewallAPIInit()
if err != nil {
    return rules, err
}
defer firewallAPIRelease(u, fwPolicy)

ur, ep, enum, err := firewallRulesEnum(fwPolicy)
if err != nil {
    return rules, err
}
defer firewallRulesEnumRealease(ur, ep)

for itemRaw, length, err := enum.Next(1); length > 0; itemRaw, length, err = enum.Next(1) {
    if err != nil {
        return rules, fmt.Errorf("failed to seek next Rule item: %s", err)
    }

    rule, err := firewallRuleParams(itemRaw)
    if err != nil {
        return rules, err
    }
    rules = append(rules, rule)
}

return rules, nil

}