* Refactor bugs function.

module/testcase/control.php

@@ -1249,6 +1249,7 @@ class testcase extends control
     }
 
     /**
+     * 用例产生的 bugs。
      * Case bugs.
      *
      * @param  int    $runID
@@ -1257,7 +1258,7 @@ class testcase extends control
      * @access public
      * @return void
      */
-    public function bugs($runID, $caseID = 0, $version = 0)
+    public function bugs(int $runID, int $caseID = 0, int $version = 0)
     {
         $this->view->title = $this->lang->testcase->bugs;
         $this->view->bugs  = $this->loadModel('bug')->getCaseBugs($runID, $caseID, $version);