System Properties pages unduly closed when Users Profile sub-dialog closed with ESC

System Properties pages unduly closed when Users Profile sub-dialog closed with ESC

Steps to reproduce

• Open System Properties page on "Advanced Tab"
• Open "User profiles" sub-dialog
• If this sub-dialog is closed by using "ESC" key, both "User profile" AND "System properties" are closed. See logs

(ntoskrnl/mm/mmfault.c:136) Address: c7c38900 (plenty of)

(ntoskrnl/mm/ARM3/pagfault.c:85) Close to our death... 

Notes :

• If "User profiles" closed with top-right cross : System Properties remain open
• If other "sub-dialog" (Virtual Memory,...) are opened then closed with "ESC", then System Properties remains open.

Cause is userprofile.c:867 which call OnDestroy incorrectly freeing Heap zones + not taking care of Handle validity before using it.