From b0da0bbf8b981d739d8e83fa9b51eccf0d1b2bca Mon Sep 17 00:00:00 2001
From: Max Kellermann <mk@cm4all.com>
Date: Wed, 13 Sep 2023 13:40:33 +0200
Subject: [PATCH] util/IntrusiveForwardList: pop_front() returns reference

---
 src/util/IntrusiveForwardList.hxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/util/IntrusiveForwardList.hxx b/src/util/IntrusiveForwardList.hxx
index 5bd643c7f..a00d06050 100644
--- a/src/util/IntrusiveForwardList.hxx
+++ b/src/util/IntrusiveForwardList.hxx
@@ -193,9 +193,11 @@ public:
 		return *Cast(head.next);
 	}
 
-	void pop_front() noexcept {
+	reference pop_front() noexcept {
+		auto &i = front();
 		head.next = head.next->next;
 		--counter;
+		return i;
 	}
 
 	class const_iterator;