pkg/*: fix "unconvert" warnings

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

pkg/flags/unique_strings.go

@@ -67,7 +67,7 @@ func NewUniqueStringsValue(s string) (us *UniqueStringsValue) {
 
 // UniqueStringsFromFlag returns a string slice from the flag.
 func UniqueStringsFromFlag(fs *flag.FlagSet, flagName string) []string {
-	return []string((*fs.Lookup(flagName).Value.(*UniqueStringsValue)).stringSlice())
+	return (*fs.Lookup(flagName).Value.(*UniqueStringsValue)).stringSlice()
 }
 
 // UniqueStringsMapFromFlag returns a map of strings from the flag.

pkg/report/timeseries.go

@@ -102,7 +102,7 @@ func (sp *secondPoints) getTimeSeries() TimeSeries {
 	for k, v := range sp.tm {
 		var lat time.Duration
 		if v.count > 0 {
-			lat = time.Duration(v.totalLatency) / time.Duration(v.count)
+			lat = v.totalLatency / time.Duration(v.count)
 		}
 		tslice[i] = DataPoint{
 			Timestamp:  k,