i3status: Bugfix: Reading multiple temperature sensors not possible
i3status: Bugfix: Reading multiple temperature sensors not possible

This patch inlines the creation of the thermal zone string in order
to force computation on each invocation. This is necessary to be able
to read the values of several temperature sensors.

i3/i3status,lbonn/i3status,Watcom/i3status,lbonn/i3status,Gravemind/i3status,bsdjhb/i3status,lexszero/i3status,puiterwijk/i3status,dj95/i3status,dj95/i3status,jasperla/i3status,puiterwijk/i3status,opntr/i3status,lahwaacz/i3status,lahwaacz/i3status,peder2tm/i3status-netdev,puiterwijk/i3status,Watcom/i3status,opntr/i3status,Dettorer/i3status,Dettorer/i3status,rpetrano/i3status,Watcom/i3status,JSmith-BitFlipper/i3status,Dettorer/i3status,KarboniteKream/i3status,i3/i3status,afh/i3status,Dettorer/i3status,bsdjhb/i3status,lexszero/i3status,lahwaacz/i3status,Airblader/i3status,afh/i3status,ixjlyons/i3status,JSmith-BitFlipper/i3status,mkroman/i3status,dj95/i3status,Watcom/i3status,opntr/i3status,afh/i3status,mkroman/i3status,peder2tm/i3status-netdev,KarboniteKream/i3status,Airblader/i3status,KarboniteKream/i3status,dj95/i3status,peder2tm/i3status-netdev,Gravemind/i3status,i3/i3status,ixjlyons/i3status,flammi/i3status,JSmith-BitFlipper/i3status,peder2tm/i3status-netdev,afh/i3status,flammi/i3status,ixjlyons/i3status,puiterwijk/i3status,Airblader/i3status,lbonn/i3status,rpetrano/i3status,ixjlyons/i3status,lexszero/i3status,jasperla/i3status,rpetrano/i3status,bsdjhb/i3status,i3/i3status,lexszero/i3status,Airblader/i3status,opntr/i3status,lahwaacz/i3status,mkroman/i3status,jasperla/i3status,bsdjhb/i3status,flammi/i3status,KarboniteKream/i3status,flammi/i3status,lbonn/i3status,JSmith-BitFlipper/i3status,Gravemind/i3status,jasperla/i3status,rpetrano/i3status,Gravemind/i3status,mkroman/i3status