Clear callback size if we didn't get it

diff --git a/web-lib-funcs.pl b/web-lib-funcs.pl
index f530308..22dcbf6 100755 (executable)
--- a/web-lib-funcs.pl
+++ b/web-lib-funcs.pl
@@ -6930,6 +6930,7 @@ if ($_[0] == 2) {
                            &nice_size($progress_size)),"<br>\n";
                }
        else {
+               $progress_size = undef;
                print &text('progress_nosize', $progress_callback_url),"<br>\n";
                }
        $last_progress_time = $last_progress_size = undef;