Fixed strange bug where music doesn't play when ran as taskbar pinned item.

Details: MapVirtualKeyEx(uiScan, MAPVK_VSC_TO_VK, hklQWERTY) returns 0 only when ran pinned, for reasons unknown.

Fix: If it returns 0, return original code. May not work for Dvorak.

Signed-off-by: Xiaomao Chen <xiaomao5@live.com>