[!] fix error if $CONFIG_TMUX is not set
[!] fix error if $CONFIG_TMUX is not set

voku/dotfiles,voku/dotfiles,TuxCoder/dotfiles,TuxCoder/dotfiles,voku/dotfiles,DrVanScott/dotfiles,TuxCoder/dotfiles,voku/dotfiles,TuxCoder/dotfiles,DrVanScott/dotfiles,DrVanScott/dotfiles,DrVanScott/dotfiles