fix progress for small transfers

diff --git a/datalink.c b/datalink.c
index a2bdc70..6a37179 100644 (file)
--- a/datalink.c
+++ b/datalink.c
@@ -107,6 +107,9 @@ static void print_progress(int done, int total)
        printf("%06x/%06x |", done, total);
 
        step = total / 20;
+       if (step <= 0)
+               step = 1;
+
        for (i = step; i <= total; i += step)
                printf("%c", done >= i ? '=' : '-');
        printf("| %3d%%", done * 100 / total);