QWaitCondition: Destroyed while threads are still running

[ilyagoo]

i have two threads: one - gui & other - backgroud.
in gui thread i have pointer to other thread.
when closing app gui destructor is called, i want to quit & destroy other thread there:


delete pOther;


other's destructor look like this:



other::~other()
{
if ( isRunning() )
quit();
wait();
}


but qt-4.6.1 prints warning QWaitCondition: Destroyed while threads are still running.
there is now warnings neither in qt-4.6.0 nor in qt-4.3.1 on windows.
whats wrong? is it my mistake? how to get rid of it? thanks