Commit f0e803ed for libheif

commit f0e803edb05251ae6ec9a1981c938a32df9f0c04
Author: Joachim Bauch <bauch@struktur.de>
Date:   Tue Nov 4 10:47:53 2025 +0100

    Fix duplicate warnings after color conversion.

diff --git a/libheif/color-conversion/colorconversion.cc b/libheif/color-conversion/colorconversion.cc
index 81f1638e..5a4d467a 100644
--- a/libheif/color-conversion/colorconversion.cc
+++ b/libheif/color-conversion/colorconversion.cc
@@ -492,8 +492,6 @@ Result<std::shared_ptr<HeifPixelImage>> ColorConversionPipeline::convert_image(c
     in = out;
   }

-  out->add_warnings(input->get_warnings());
-
   return out;
 }