Bleepin' Windows uses LLP64, not LP64


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@158 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/turbojpegl.c b/turbojpegl.c
index f5f0db1..2150a2d 100644
--- a/turbojpegl.c
+++ b/turbojpegl.c
@@ -192,7 +192,8 @@
 			j->cinfo.image_height-j->cinfo.next_scanline);
 	}
 	jpeg_finish_compress(&j->cinfo);
-	*size=TJBUFSIZE(j->cinfo.image_width, j->cinfo.image_height)-(j->jdms.free_in_buffer);
+	*size=TJBUFSIZE(j->cinfo.image_width, j->cinfo.image_height)
+		-(unsigned long)(j->jdms.free_in_buffer);
 
 	if(row_pointer) free(row_pointer);
 	return 0;