coverage: fix _run_command not actually returning the value

Change-Id: I8b12af2bbf901b7f0ee6491890a2eb8f67141a80
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6433677
Reviewed-by: Ali Hijazi <[email protected]>
Commit-Queue: Paul Semel <[email protected]>
Auto-Submit: Paul Semel <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1442737}
NOKEYCHECK=True
GitOrigin-RevId: 49b15be1862d2684af095b85cf118593367729ec
1 file changed