[aisleriot] cards: svgcrush: Keep files that pngcrush chokes on

[Christian Persch <chpe src gnome org>]

commit 383829da4693e08e050daa8e93d936a0f3bf8f20
Author: Christian Persch <chpe gnome org>
Date:   Thu Dec 8 00:13:18 2011 +0100

    cards: svgcrush: Keep files that pngcrush chokes on
    
    Allows to examine them.

 cards/svgcrush.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/cards/svgcrush.c b/cards/svgcrush.c
index a5a4351..fe41009 100644
--- a/cards/svgcrush.c
+++ b/cards/svgcrush.c
@@ -150,7 +150,11 @@ crush (const char *tmp_in,
   /* pngcrush sometimes exits with status 0 but writes a zero-length file */
   if (*len == 0) {
     g_free (contents);
-    contents = NULL;
+    unlink (tmp_out);
+    link (tmp_in, tmp_out);
+    g_printerr ("pngcrush choked on file %s\n", tmp_out);
+    g_free (tmp_out);
+    return NULL;
   }
 
 out: