fix: reload in progress always shown when empty response

update_checker.html

@@ -48,8 +48,8 @@
 					} else {
 						downloadedOffline.append(line)
 					}
-					$("#refresh").attr("disabled", false).text("refresh");
 				})
+				$("#refresh").attr("disabled", false).text("refresh");
 			})
 		}
 		$(document).ready(function() {