Hmmm a chafe guard or teflon tape would definitely prevent the LCA from rubbing the hole in the first place. As for repairing damage already done, I would disconnect the e-brake line and slide some heatshrink onto it and shrink it down, covering the hole, then apply the chafe guard or teflon tape to the the repaired line.
2012 Kona Blue 3.7L V6:
Borla LT headers, O/R h-pipe, Borla S-types, 3.73 gears,
Steeda adjustable UCA w/ mount, BMR LCAs, Airaid CAI,
LCA Relocation brackets, AE driveshaft, GT 80mm TB,
Black 18x9/10 2010 GT500 Wheels w/ Nitto NT555s,
Eibach Sportline Springs/shocks & Koni STR.T Struts