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-rw-r--r--ext/metadata/metadatamuxpng.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/metadata/metadatamuxpng.h b/ext/metadata/metadatamuxpng.h
index 0e127c88..96eb7bd2 100644
--- a/ext/metadata/metadatamuxpng.h
+++ b/ext/metadata/metadatamuxpng.h
@@ -78,7 +78,7 @@ extern void metadatamux_png_dispose (PngMuxData * png_data);
extern void metadatamux_png_lazy_update (PngMuxData * png_data);
-int
+extern MetadataParsingReturn
metadatamux_png_parse (PngMuxData * png_data, guint8 * buf,
guint32 * bufsize, const guint32 offset, guint8 ** next_start, guint32 * next_size);