Fixes #3072, Xft.dpi can be floating point
Fixes #3072, Xft.dpi can be floating point

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