Commit a1a3688c for libheif

commit a1a3688c44a95f67f566ed309dbc35a035599a5f
Author: Dirk Farin <dirk.farin@gmail.com>
Date:   Tue Feb 3 19:47:13 2026 +0100

    revert false commit

diff --git a/examples/heif_dec.cc b/examples/heif_dec.cc
index f659c56a..14cbaa3c 100644
--- a/examples/heif_dec.cc
+++ b/examples/heif_dec.cc
@@ -240,7 +240,7 @@ int decode_single_image(heif_image_handle* handle,
   int bit_depth = heif_image_handle_get_luma_bits_per_pixel(handle);
   if (bit_depth < 0) {
     std::cerr << "Input image has undefined bit-depth\n";
-    //return 1;
+    return 1;
   }

   int has_alpha = heif_image_handle_has_alpha_channel(handle);