Update ReadBookActivity.kt

app/src/main/java/io/legado/app/ui/book/read/ReadBookActivity.kt

@@ -1000,10 +1000,9 @@ class ReadBookActivity : BaseReadBookActivity(),
 
     /* 恢复到 全文搜索/进度条跳转前的位置 */
     private fun restoreLastBookProcess() {
-        // 默认提示恢复
         if (confirmRestoreProcess == true) {
             ReadBook.restoreLastBookProcess()
-        } else {
+        } else if (confirmRestoreProcess == null) {
             alert(R.string.draw) {
                 setMessage(R.string.restore_last_book_process)
                 yesButton {