lib-storage: convert missed mbox casts to container_of

diff --git a/src/lib-storage/index/mbox/mbox-save.c b/src/lib-storage/index/mbox/mbox-save.c
index 6c6526b427f578710da553d415d2f11fa74de302..21934e728bd59fdeff94131286033d6b6f2a2cbd 100644 (file)
--- a/src/lib-storage/index/mbox/mbox-save.c
+++ b/src/lib-storage/index/mbox/mbox-save.c
@@ -652,7 +652,7 @@ int mbox_save_continue(struct mail_save_context *_ctx)
 
 int mbox_save_finish(struct mail_save_context *_ctx)
 {
-       struct mbox_save_context *ctx = (struct mbox_save_context *)_ctx;
+       struct mbox_save_context *ctx = MBOX_SAVECTX(_ctx);
 
        if (!ctx->failed && ctx->eoh_offset == (uoff_t)-1)
                (void)mbox_save_finish_headers(ctx);