Update submit.go

Refactor slightly to be clearer that we only add .gz if it's not already there.

Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>

submit.go

@@ -438,10 +438,9 @@ func saveLogPart(logNum int, filename string, reader io.Reader, reportDir string
 	// Either way, we need to append .gz, because we're compressing it.
 	var leafName string
 	if logRegexp.MatchString(filename) {
-		if strings.HasSuffix(filename, ".gz") {
-			leafName = filename
-		} else {
-			leafName = filename + ".gz"
+		leafName = filename               
+		if !strings.HasSuffix(filename, ".gz") {
+			leafName += ".gz"
 		}
 	} else {
 		leafName = fmt.Sprintf("logs-%04d.log.gz", logNum)