Tweak PDF annot API.

The values returned from the pdf_annot_{contents, author, date}
functions should not be altered, hence make it const.

1 files changed, 3 insertions, 3 deletions

diff --git a/source/pdf/pdf-annot-edit.c b/source/pdf/pdf-annot-edit.c
index d073a699..7cd344a4 100644
--- a/source/pdf/pdf-annot-edit.c
+++ b/source/pdf/pdf-annot-edit.c
@@ -373,17 +373,17 @@ void pdf_set_annot_contents(fz_context *ctx, pdf_document *doc, pdf_annot *annot
 	pdf_dict_put_drop(ctx, annot->obj, PDF_NAME_Contents, pdf_new_string(ctx, doc, text, strlen(text)));
 }
 
-char *pdf_annot_contents(fz_context *ctx, pdf_annot *annot)
+const char *pdf_annot_contents(fz_context *ctx, pdf_annot *annot)
 {
 	return pdf_to_str_buf(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_Contents));
 }
 
-char *pdf_annot_author(fz_context *ctx, pdf_annot *annot)
+const char *pdf_annot_author(fz_context *ctx, pdf_annot *annot)
 {
 	return pdf_to_str_buf(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_T));
 }
 
-char *pdf_annot_date(fz_context *ctx, pdf_annot *annot)
+const char *pdf_annot_date(fz_context *ctx, pdf_annot *annot)
 {
 	return pdf_to_str_buf(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_CreationDate));
 }