fix log counter
fix log counter

Summary: Log counter had a bug that only allowed the number to go up to 2. To increment the number of the last row is read and increased. However, this failed and always fall back to 1.

Reviewed By: passy

Differential Revision: D9613056

fbshipit-source-id: dc73990eb26c7a6ecbc70b0fe50687607b8bf0ad

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