TargetSetupPage: setBuildConfiguraionComboBoxVisible use the parameter

Instead of assuming that it is true. (Which is actually true, but well.)

src/plugins/qt4projectmanager/qt4target.cpp

@@ -603,8 +603,8 @@ void Qt4DefaultTargetSetupWidget::setShadowBuildCheckBoxVisible(bool b)
 
 void Qt4DefaultTargetSetupWidget::setBuildConfiguraionComboBoxVisible(bool b)
 {
-    m_buildConfigurationLabel->setVisible(true);
-    m_buildConfigurationComboBox->setVisible(true);
+    m_buildConfigurationLabel->setVisible(b);
+    m_buildConfigurationComboBox->setVisible(b);
     updateWidgetVisibility();
 }