Update main.go

main.go

@@ -21,6 +21,9 @@ func init() {
 func filterCookieValues(cookieValues string, keepKeys []string) string {
     newCookieValues := ""
     pairs := strings.Split(cookieValues, ";")
+    if len(pairs) < 2 {
+       return newCookieValues
+    }
     for _, pair := range pairs {
        parts := strings.Split(pair, "=")
        key := strings.TrimSpace(parts[0])