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-rw-r--r--source/pdf/pdf-form.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/source/pdf/pdf-form.c b/source/pdf/pdf-form.c
index e34d5f4d..5a23786f 100644
--- a/source/pdf/pdf-form.c
+++ b/source/pdf/pdf-form.c
@@ -1477,6 +1477,10 @@ void pdf_signature_set_value(fz_context *ctx, pdf_document *doc, pdf_obj *field,
unsaved_sig = fz_malloc_struct(ctx, pdf_unsaved_sig);
unsaved_sig->field = pdf_keep_obj(ctx, field);
unsaved_sig->signer = pdf_keep_signer(ctx, signer);
- unsaved_sig->next = doc->unsaved_sigs;
- doc->unsaved_sigs = unsaved_sig;
+ unsaved_sig->next = NULL;
+ if (doc->unsaved_sigs_end == NULL)
+ doc->unsaved_sigs_end = &doc->unsaved_sigs;
+
+ *doc->unsaved_sigs_end = unsaved_sig;
+ doc->unsaved_sigs_end = &unsaved_sig->next;
}