Don't use a member variable for the security descriptor

--HG--
extra : rebase_source : 3d32ec01826e8bec3fa288bc5707f16fddf240df
Fixed indentation in AdblockPlus.rgs

--HG--
extra : rebase_source : 24fb8777e2a6129f6cda85ca7c7e5c49ab89364f