devnet: fix build issue (#12364)

It began to error after https://github.com/ethereum-optimism/optimism/pull/12336

bedrock-devnet/devnet/__init__.py

@@ -247,11 +247,7 @@ def devnet_deploy(paths):
     wait_for_rpc_server('127.0.0.1:9545')
 
     # Print out the addresses being used for easier debugging.
-    l2_output_oracle = addresses['L2OutputOracleProxy']
-    dispute_game_factory = addresses['DisputeGameFactoryProxy']
     batch_inbox_address = rollup_config['batch_inbox_address']
-    log.info(f'Using L2OutputOracle {l2_output_oracle}')
-    log.info(f'Using DisputeGameFactory {dispute_game_factory}')
     log.info(f'Using batch inbox {batch_inbox_address}')
 
     # Set up the base docker environment.
@@ -264,7 +260,11 @@ def devnet_deploy(paths):
     # Must be done selectively because op-proposer throws if both are set.
     if DEVNET_L2OO:
         docker_env['L2OO_ADDRESS'] = l2_output_oracle
+        l2_output_oracle = addresses['L2OutputOracleProxy']
+        log.info(f'Using L2OutputOracle {l2_output_oracle}')
     else:
+        dispute_game_factory = addresses['DisputeGameFactoryProxy']
+        log.info(f'Using DisputeGameFactory {dispute_game_factory}')
         docker_env['DGF_ADDRESS'] = dispute_game_factory
         docker_env['DG_TYPE'] = '254'
         docker_env['PROPOSAL_INTERVAL'] = '12s'