[lint] fix more issues

Author: capcom6

pkg/cache/options.go

@@ -21,6 +21,7 @@ func WithTTL(ttl time.Duration) Option {
 	return func(o *options) {
 		if ttl <= 0 {
 			o.validUntil = time.Time{}
+			return
 		}
 
 		o.validUntil = time.Now().Add(ttl)

pkg/cache/redis.go

@@ -41,6 +41,9 @@ if ttlTs > 0 then
   redis.call('HExpireAt', KEYS[1], ttlTs, field)
 elseif ttlDelta > 0 then
   local ttl = redis.call('HTTL', KEYS[1], field)
+  if ttl < 0 then
+    ttl = 0
+  end
   local newTtl = ttl + ttlDelta
   redis.call('HExpire', KEYS[1], newTtl, field)
 end