Fix us.codecraft.webmagic.scheduler.FileCacheQueueScheduler#readCursorFile, refs #1175.

Author: sutra

webmagic-extension/src/main/java/us/codecraft/webmagic/scheduler/FileCacheQueueScheduler.java

@@ -125,7 +125,7 @@ private void readCursorFile() throws IOException {
                 }
             }
             if (lastLine != null) {
-                cursor.set(NumberUtils.toInt(line));
+                cursor.set(NumberUtils.toInt(lastLine));
             }
         }
     }