AutoTest: Use ITestFramework * instead of its id in some cases

Change-Id: Ic327e31185247b6479c78af8bf8156f44bb4bdfb
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/autotest/quick/quicktestframework.h

@@ -46,7 +46,7 @@ public:
     unsigned priority() const override;
 
 protected:
-    ITestParser *createTestParser() const override;
+    ITestParser *createTestParser() override;
     TestTreeItem *createRootNode() const override;
 };