From 5ded4479d6ddbbe16c631144ef987c4c02e706a6 Mon Sep 17 00:00:00 2001
From: Carl Worth <cworth@cworth.org>
Date: Thu, 31 May 2007 15:35:14 -0700
Subject: [PATCH] Fix return value of cairo_surface_write_to_png for
 unsupported formats

For some reason this was returning CAIRO_STATUS_NULL_POINTER.
Now fixed to return CAIRO_STATUS_INVALID_FORMAT.
---
 src/cairo-png.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cairo-png.c b/src/cairo-png.c
index 76e901f67..35db3d9aa 100644
--- a/src/cairo-png.c
+++ b/src/cairo-png.c
@@ -175,7 +175,7 @@ write_png (cairo_surface_t	*surface,
 	png_color_type = PNG_COLOR_TYPE_GRAY;
 	break;
     default:
-	status = CAIRO_STATUS_NULL_POINTER;
+	status = CAIRO_STATUS_INVALID_FORMAT;
 	goto BAIL3;
     }