close the temp file after cleaning

commands/command_clean.go

@@ -44,9 +44,10 @@ func cleanCommand(cmd *cobra.Command, args []string) {
 		file.Close()
 	}
 
-	defer cleaned.Close()
+	cleaned.Close()
+	defer cleaned.Teardown()
 	if err != nil {
-		Panic(err, "Error cleaning asset")
+		Panic(err, "Error cleaning asset.")
 	}
 
 	tmpfile := cleaned.File.Name()

pointer/clean.go

@@ -34,5 +34,9 @@ func Clean(reader io.Reader, size int64, cb gitmedia.CopyCallback) (*cleanedAsse
 }
 
 func (a *cleanedAsset) Close() error {
+	return a.File.Close()
+}
+
+func (a *cleanedAsset) Teardown() error {
 	return os.Remove(a.File.Name())
 }