For logbuffer_take, change order of events so the new logbuffer has...

... a chance to take memory from the old

src/fellow_log.c

@@ -2204,15 +2204,18 @@ logbuffer_init(struct fellow_fd *ffd, struct fellow_logbuffer *lbuf,
 static inline void
 logbuffer_take(struct fellow_logbuffer *to, struct fellow_logbuffer *from)
 {
-	logbuffer_fini_dskpool_mem(from);
-	BUDDY_POOL_FINI(from->mempool);
-	BUDDY_POOL_FINI(from->ffpool);
 	logbuffer_wait_flush_fini(from);
-	TAKE(*to, *from);
-	BUDDY_POOL_INIT(to->mempool, to->membuddy,
+	*to = *from;
+	BUDDY_POOL_INIT(to->mempool, from->membuddy,
 	    logbuffer_fill_mempool, to);
-	BUDDY_POOL_INIT(to->ffpool, to->membuddy,
+	BUDDY_POOL_INIT(to->ffpool, from->membuddy,
 	    logbuffer_fill_ffpool, to);
+
+	logbuffer_fini_dskpool_mem(from);
+	BUDDY_POOL_FINI(from->mempool);
+	BUDDY_POOL_FINI(from->ffpool);
+
+	memset(from, 0, sizeof *from);
 }
 
 static struct fellow_disk_log_block *