fix: instance variable @errors not initialized #1036

Job	Run time
Lint	8s
IPS	3m 0s
Benchmark	2m 41s
Main (7.2, 3.3)	1m 35s
Massive Cluster	5m 35s
NAT-ted Environments	1m 8s
Main (7.2, 3.3, compose.ssl.yaml)	1m 23s
Profiling (single)	51s
Main (7.2, 3.3, hiredis)	1m 0s
Profiling (excessive_pipelining)	45s
Main (7.2, 3.3, hiredis, compose.ssl.yaml)	1m 20s
Profiling (pipelining_in_moderation)	48s
Main (7.2, 3.3, compose.replica.yaml, 2)	1m 5s
Profiling (original_mget)	41s
Main (test_cluster_down)	3m 28s
Profiling (emulated_mget)	50s
Main (test_cluster_broken, no, 6)	2m 37s
Main (8, 3.3, compose.valkey.yaml, 2)	1m 4s
Main (7.2, 3.2, compose.auth.yaml)	1m 2s
Main (7.0, 3.1)	1m 4s
Main (6.2, 3.0)	1m 8s
Main (5.0, 2.7)	1m 24s
Main (test_cluster_state, PrimaryOnly, compose.valkey.yaml, 8, 2, 9)	2m 2s
Main (test_cluster_state, Pooled, compose.valkey.yaml, 8, 2, 9)	2m 8s
Main (test_cluster_state, ScaleReadRandom, compose.valkey.yaml, 8, 2, 9)	2m 6s
Main (test_cluster_state, ScaleReadRandomWithPrimary, compose.valkey.yaml, 8, 2, 9)	2m 2s
Main (test_cluster_state, ScaleReadLatency, compose.valkey.yaml, 8, 2, 9)	2m 13s
Main (jruby)	1m 55s
Main (truffleruby)	1m 16s
Main (test_cluster_scale, Single, compose.scale.yaml, 8)	1m 12s
Main (test_cluster_scale, Pipeline, compose.scale.yaml, 8)	1m 9s
Main (test_cluster_scale, Transaction, compose.scale.yaml, 8)	1m 17s
Main (test_cluster_scale, PubSub, compose.scale.yaml, 8)	1m 46s
	53m 43s

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