dump: Add comment on new counters

Signed-off-by: Felicitas Pojtinger <felicitas@pojtinger.com>

Author: pojntfx

criu/timer.c

@@ -393,6 +393,12 @@ int parasite_dump_posix_timers_seized(struct proc_posix_timers_stat *proc_args,
 	if (ret < 0)
 		goto end_posix;
 
+	/*
+	* i advances every iteration (indexes parasite-filled args->timer[]);                                                                                                                                            
+	* j advances only for timers we keep, both the next output slot                                                                                                                                            
+	* and the final count. Timers whose notify thread has exited are                                                                                                                                                 
+	* skipped (i.e., j <= i).                                                                                                                                                                                            
+	*/ 
 	i = 0;
 	j = 0;
 	list_for_each_entry(temp, &proc_args->timers, list) {