update

[l4.git] / l4 / pkg / libpng / lib / contrib / pngtrans.c

diff --git a/l4/pkg/libpng/lib/contrib/pngtrans.c b/l4/pkg/libpng/lib/contrib/pngtrans.c
index 8f8bc5d9e74b8891b9cbc7aa367f6f3d1e6c4285..94f18df27e9c596326b3d945d5940b63cc36a367 100644 (file)
--- a/l4/pkg/libpng/lib/contrib/pngtrans.c
+++ b/l4/pkg/libpng/lib/contrib/pngtrans.c
@@ -1,8 +1,8 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.6.2 [April 25, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.9 [February 6, 2014]
+ * Copyright (c) 1998-2014 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
@@ -57,7 +57,9 @@ png_set_packing(png_structrp png_ptr)
    if (png_ptr->bit_depth < 8)
    {
       png_ptr->transformations |= PNG_PACK;
-      png_ptr->usr_bit_depth = 8;
+#     ifdef PNG_WRITE_SUPPORTED
+         png_ptr->usr_bit_depth = 8;
+#     endif
    }
 }
 #endif