no-op change: store |button| in the correct data type
no-op change: store |button| in the correct data type

Airblader/i3,i3/i3,Airblader/i3,stapelberg/i3,stapelberg/i3,Airblader/i3-original,i3/i3,Airblader/i3,stapelberg/i3,Airblader/i3-original,cornerman/i3,cornerman/i3,Airblader/i3-original,i3/i3,stapelberg/i3,Airblader/i3-original,Airblader/i3,i3/i3,cornerman/i3,Airblader/i3-original,cornerman/i3