indicator menu should be dismissed when power button is pressed

Steps to reproduce:

1) have the device locked
2) pull down an indicator (for example, the network one)
3) press the power button (the displays switches off)
4) press the power button on

Expected result: I can see the time and infographics.

Actual result: the network menu is still there.

Usually I use indicator while my phone is locked, typically to turn on or off the network connection, without unlocking the phone. The if after half an hour I want to switch on my phone just to quickly have a look at the time, it's quite annoying to find the indicator menu still there.

Note that this behaviour does not happen if you pulled down the indicator when the phone was unlocked: in that case, the indicator menu is correctly dismissed.