From 6edd0ecd3b679fe176e5b7951e406a2af0fa4676 Mon Sep 17 00:00:00 2001
From: Tilman Sauerbeck <tilman@code-monkey.de>
Date: Sun, 15 Feb 2004 10:18:11 +0000
Subject: [PATCH] don't attempt to save an image without image data

SVN revision: 8973
---
 loaders/loader_png.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/loaders/loader_png.c b/loaders/loader_png.c
index f226e4f..6803ebc 100644
--- a/loaders/loader_png.c
+++ b/loaders/loader_png.c
@@ -254,6 +254,9 @@ save(ImlibImage * im, ImlibProgressFunction progress, char progress_granularity)
    ImlibImageTag      *tag;
    int                 quality = 75, compression = 3, num_passes = 1, pass;
 
+   if (!im->data)
+      return 0;
+
    f = fopen(im->real_file, "wb");
    if (!f)
       return 0;