commit 77929f826177f51f26c8d58f29dc40b988d6f15d
from: Russ Cox <rsc@swtch.com>
date: Fri Sep 03 14:21:44 2010 UTC

topng: 64-bit fix

R=rsc
http://codereview.appspot.com/2124042

commit - ef5c6a6edaf3dcf2cddd46841dc0dd8fce2bf967
commit + 77929f826177f51f26c8d58f29dc40b988d6f15d
blob - 76835e017a8e7bf1c834155b4f129873f975e11f
blob + 24a61a3661314cc2b551e34b1adf07a4a77bb586
--- src/cmd/jpg/writepng.c
+++ src/cmd/jpg/writepng.c
@@ -228,7 +228,7 @@ memwritepng(Biobuf *bo, Memimage *r, ImageInfo *II)
 	/* image chunks */
 	zr.nrow = nrow;
 	zr.ncol = ncol;
-	zr.width = rgb->width * sizeof(ulong);
+	zr.width = rgb->width * sizeof(uint32);
 	zr.data = rgb->data->bdata;
 	zr.row = zr.col = 0;
 	zr.pixwid = chantodepth(rgb->chan)/8;