Fix an instance of -Wunused-but-set-variable.
Fix an instance of -Wunused-but-set-variable.

Bug: chromium:1203071

Closes #13929.

PiperOrigin-RevId: 396306613

ButterflyNetwork/bazel,ButterflyNetwork/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,katre/bazel,cushon/bazel,bazelbuild/bazel,cushon/bazel,ButterflyNetwork/bazel,cushon/bazel,cushon/bazel,katre/bazel,perezd/bazel,bazelbuild/bazel,katre/bazel,bazelbuild/bazel,cushon/bazel,bazelbuild/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,ButterflyNetwork/bazel,perezd/bazel,cushon/bazel,perezd/bazel,katre/bazel,perezd/bazel,katre/bazel,katre/bazel,perezd/bazel,perezd/bazel,perezd/bazel