Memory Leak suspected with Dialog creates menus and icons

When opening and closing a dialog repeatedly, where the dialog creates menus and icons, This turns out that this lead to unreclaimed memory by Qt internally.

This is tested with Mac Instruments tool, Attached is the example which can be used to see it:

Steps to reproduce:

Start Mac's Instrument application,

Start Example,

Attach example in the instrument and start recording.

Example will create 10 windows, once all 10 is created start closing all of the window until application itself is not closed. observed that in instrument memory curve is never brought down to the level even when first window was created.