don't pass a ssize_t to a %d format string

diff --git a/Imager.xs b/Imager.xs
index e5ff283b0ff83e8a1117953252854580d6e67b03..4274c38effaa43aa537691a70bdedf8b131894c7 100644 (file)
--- a/Imager.xs
+++ b/Imager.xs
@@ -2995,7 +2995,7 @@ i_img_make_palette(HV *quant_hv, ...)
          }
          else {
            myfree(imgs);
-           croak("Image %d is not an image object", i+1);
+           croak("Image %d is not an image object", (int)i+1);
           }
        }
         memset(&quant, 0, sizeof(quant));