Fixing a race condition in landmines.py

Fixing a race condition in landmines.py

Landmines.py had some logic where it would first check if a directory existed before creating it, but this was sometimes causing an exception wherein the file was reported as existing during the os.mkdirs call, even though it was not reported as existing during the os.path.exists call.

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=265532

[iannucci, 2014-04-22 23:22:54]

lgtm

[commit-bot: I haz the power, 2014-04-22 23:23:09]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/smut@google.com/248343003/20001

[commit-bot: I haz the power, 2014-04-23 04:19:26]

Change committed as 265532