tree c628f7ee8ad6f3ee9edb3a20a5d860fe6662252e
parent 2611ec03732ce7fda036c21d197462213b5a6793
author larsrc <larsrc@google.com> 1623933511 -0700
committer Copybara-Service <copybara-worker@google.com> 1623933580 -0700

Check if `treeDeleter` is actually async before casting it. Fixes #13240.

This code assumed that `registerSpawnStrategies` would be always be called before `afterCommand`, but that's not the case if the build was interrupted or failed before the execution phase.

RELNOTES: None.
PiperOrigin-RevId: 379937925