xgb: fix spurious key up/down events
xgb: fix spurious key up/down events

The KeymapNotify event handling code wasn't correctly translating
X keysym to wde key string. This could result in spurious events
for keys where the two are different (eg. left shift is "Shift_L"
in X11 and "left_shift" in wde).

kirillDanshin/go-wde,kirillDanshin/go-wde