Crashed gdb for Symbian leaves Creator in inconsistent state

When I debug a program on Symbian and gdb crashes, Creator is in an inconsistent state. It looks as if it was still debugging so no new debugging session can be started.

To reproduce:

1. Open example analogclock.pro.
2. Set breakpoint on line 140 of analogclock.cpp:

   painter.drawLine(92, 0, 96, 0);

3. Run this in debugger on Symbian device.
4. In Locals and Watchers view, try to expand object minuteHand. gdb crashes.
5. Creator reports the crash correctly. Then it complains about unresponsive gdb. Click "Stop debugging".
6. Now Creator looks fine but the phone is unresponsive, so unplug the phone to kill the stopped app. Creator reports this, too, but goes into an incosistent state. Debugger menu now shows "Debugger running". A new debugging session can't be started. Plugging in the phone won't change this.