Server refresment

[Jaiko]

Crashed few times to clicking server list refreshment button -->

Build KillingFloor_Build_[2009-02-09_10.82]
OS: Windows NT 6.0 (Build: 6001)
CPU: AuthenticAMD Unknown processor @ 2105 MHz with 4093MB RAM
Video: NVIDIA GeForce 9800 GTX/9800 GTX+ (304)
General protection fault!
History: UObject::ProcessEvent <- (KFBrowser_Footer Package.KFBrowser_Footer, Function GUI2K4.UT2k4Browser_Footer.InternalOnClick) <- UObject::ProcessDelegate <- UGUIComponent::MouseReleased <- (GUIButton Package.GUIButton) <- UGUIController::MouseReleased <- UGUIController::NativeKeyEvent::LeftMouseClick <- UGUIController::NativeKeyEvent <- UInteractionMaster::MasterProcessKeyEvent <- UEngine::InputEvent <- UWindowsViewport::CauseInputEvent <- UWindowsViewport::UpdateInput <- UViewport::ReadInput <- APlayerController::Tick <- TickAllActors <- ULevel::Tick <- (NetMode=0) <- TickLevel <- UGameEngine::Tick <- Level Untitled <- UpdateWorld <- MainLoop <- FMallocWindows::Free <- FMallocWindows::Realloc <- 4C576C61 0 FArray <- FArray::Realloc <- 0*2 <- FMallocWindows::Free