Behavior of pt=ptss or pt=ptls

[cubicdaiya]

The behavior of pt is described in README.

    pt        pass through control [char]
              (ptss:pass through when size of src-image < dest
               ptls:pass through when size of src-image > dest
               n:none default:n)

But the size of src-image is compared with not dest but canvas in real code.

    char *pt = (char *)apr_table_get(ctx->prm, "pt");
    if (pt[0] == '\0' || strcmp(pt, "ptss") == 0) {
        if (sz->sw < sz->cw && sz->sh < sz->ch) {
            pt_flg = 1;
        }
    } else if (strcmp(pt, "ptls") == 0) {
        if (sz->sw > sz->cw || sz->sh > sz->ch) {
            pt_flg = 1;
        }
    }

Though I believe this comparison should be changed like below, what do you think?

--- a/mod_small_light.c
+++ b/mod_small_light.c
@@ -601,11 +601,11 @@ void small_light_calc_image_size(
     int pt_flg = 0;
     char *pt = (char *)apr_table_get(ctx->prm, "pt");
     if (pt[0] == '\0' || strcmp(pt, "ptss") == 0) {
-        if (sz->sw < sz->cw && sz->sh < sz->ch) {
+        if (sz->sw < sz->dw && sz->sh < sz->dh) {
             pt_flg = 1;
         }
     } else if (strcmp(pt, "ptls") == 0) {
-        if (sz->sw > sz->cw || sz->sh > sz->ch) {
+        if (sz->sw > sz->dw || sz->sh > sz->dh) {
             pt_flg = 1;
         }
     }