ethtool-linux: fix entry function
@@ -446,7 +446,7 @@ func (c *ethtoolCollector) entryWithCreate(key, metricFQName string) *prometheus
return c.entries[key]
}
-func (c *ethtoolCollector) entry(key) *prometheus.Desc {
+func (c *ethtoolCollector) entry(key string) *prometheus.Desc {
c.entriesMutex.Lock()
defer c.entriesMutex.Unlock()
return c.entries[key]
