The last commit left this behind.

Index: imsg.c
===================================================================
RCS file: /cvs/src/lib/libutil/imsg.c,v
diff -u -p -r1.37 imsg.c
--- imsg.c	26 Nov 2024 13:57:31 -0000	1.37
+++ imsg.c	28 Nov 2024 10:59:57 -0000
@@ -334,7 +334,6 @@ imsg_add(struct ibuf *msg, const void *d
 void
 imsg_close(struct imsgbuf *imsgbuf, struct ibuf *msg)
 {
-	struct imsg_hdr	*hdr;
 	uint32_t len;
 
 	len = ibuf_size(msg);