Prepend "exec " to default i3bar_command
Prepend "exec " to default i3bar_command

Avoids leaving around a useless shell process.

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