Merge branch 'fixRace' into 'master'

Fix race condition populating stream deck button commands

See merge request eliggett/wfview!20

controllersetup.cpp

@@ -481,6 +481,14 @@ void controllerSetup::removeDevice(USBDEVICE* dev)
 
 void controllerSetup::newDevice(USBDEVICE* dev)
 {
+    while(buttons->begin()->onCommand == Q_NULLPTR) {
+        QTime dieTime = QTime::currentTime().addMSecs( 10 );
+        while( QTime::currentTime() < dieTime )
+        {
+            qWarning(logUsbControl()) <<"Wating for commands to be populated";
+            QCoreApplication::processEvents( QEventLoop::AllEvents, 100 );
+        }
+    }
     QMutexLocker locker(mutex);
 
     for (int i=0; i<ui->tabWidget->count();i++) {