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-rw-r--r--source/pdf/pdf-crypt.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/source/pdf/pdf-crypt.c b/source/pdf/pdf-crypt.c
index b17c2a71..1499e39e 100644
--- a/source/pdf/pdf-crypt.c
+++ b/source/pdf/pdf-crypt.c
@@ -272,6 +272,9 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id)
void
pdf_drop_crypt(fz_context *ctx, pdf_crypt *crypt)
{
+ if (!crypt)
+ return;
+
pdf_drop_obj(ctx, crypt->id);
pdf_drop_obj(ctx, crypt->cf);
fz_free(ctx, crypt);