util/HugeAllocator: add SetName()

src/util/SliceBuffer.hxx

@@ -1,5 +1,5 @@
 /*
- * Copyright 2003-2021 The Music Player Daemon Project
+ * Copyright 2003-2022 The Music Player Daemon Project
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -85,6 +85,10 @@ public:
 		return n_allocated == buffer.size();
 	}
 
+	void SetName(const char *name) noexcept {
+		buffer.SetName(name);
+	}
+
 	void DiscardMemory() noexcept {
 		assert(empty());