[Merge] lp:~abreu-alexandre/webbrowser-app/intent into lp:webbrowser-app

[Alexandre Abreu]

> In IntentFilter, d_ptr is never destroyed, so it’s leaked. You could use a
> QScopedPointer to automate memory management.

totally, fixed
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https://code.launchpad.net/~abreu-alexandre/webbrowser-app/intent/+merge/247421
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