Clarify the comment.

src/ChangeLog

@@ -1,7 +1,7 @@
 2002-10-24  Pavel Roskin  <proski@gnu.org>
 
 	* filegui.c (check_progress_buttons): Reinitialize ret_value to
-	avoid old values after incomplete events.
+	avoid old values after events other than selecting a button.
 	Reported by Dmitry Semyonov <Dmitry.Semyonov@oktet.ru>
 
 2002-10-24  Andrew V. Samoilov  <sav@bcs.zp.ua>

src/filegui.c

@@ -171,7 +171,8 @@ check_progress_buttons (FileOpContext *ctx)
     if (c == EV_NONE)
 	return FILE_CONT;
 
-    /* Reinitialize to avoid old values after incomplete events */
+    /* Reinitialize to avoid old values after events other than
+       selecting a button */
     ui->op_dlg->ret_value = FILE_CONT;
 
     dlg_process_event (ui->op_dlg, c, &event);