QList<QHelpLink> returned by documentsForIdentifier crashes

VisualStudio.17.Release/17.0.6+32126.317

Pseudo code:
```
QHelpEngine *helpEngine;
void method()

{ helpEngine = new QHelpEngine(qhcFile, this); helpEngine->setupData() QList<QHelpLink> docs = helpEngine->documentsForIdentifier("console::clc");  }

```
when we exit of the method
docs variable is destroyed and QHelpLink objects available in QList are also destroyed.