Variable collisions; Possible use of nil value (#256)

* Variable '*' collides with imported package name

* Variable 'error' collides with builtin interface

* '*' may have 'nil' or other unexpected value as its corresponding error variable may be not 'nil'

core/storageproviders/local.go

@@ -40,9 +40,9 @@ func (s *LocalStorage) SegmentWritten(localFilePath string) {
 
 // VariantPlaylistWritten is called when a variant hls playlist is written
 func (s *LocalStorage) VariantPlaylistWritten(localFilePath string) {
-	_, error := s.Save(localFilePath, 0)
-	if error != nil {
-		log.Errorln(error)
+	_, err := s.Save(localFilePath, 0)
+	if err != nil {
+		log.Errorln(err)
 		return
 	}
 }