surface.c: Fix indent
surface.c: Fix indent

SirCmpwn/wlc,gpyh/wlc,yohanesu75/wlc,yohanesu75/wlc,ss1h2a3tw/wlc,Cloudef/wlc,vially/wlc,ammen99/wlc,Earnestly/wlc,UIKit0/wlc,lkundrak/wlc,vially/wlc,UIKit0/wlc,Enerccio/ewlc,lkundrak/wlc,Enerccio/ewlc,ammen99/wlc,gpyh/wlc,Cloudef/wlc,Earnestly/wlc,SirCmpwn/wlc,ss1h2a3tw/wlc,scarabeusiv/wlc,scarabeusiv/wlc