llvm-dg: fix debug guards
llvm-dg: fix debug guards

it is DEBUG_ENABLED not ENABLE_DEBUG

Signed-off-by: Marek Chalupa <a05df156a69ad59faa9af9b666ef78009594c145@gmail.com>

mchalupa/dg,mchalupa/dg,mchalupa/dg,mchalupa/dg