From: Jake Senne <26696846+w1wwwwww@users.noreply.github.com>
Date: Tue, 3 Jan 2023 21:16:45 +0000 (-0600)
Subject: Only close file if already open
X-Git-Url: https://git.sesse.net/?a=commitdiff_plain;h=fcee83810a5bcf774d3e13cf9e65ccf3b29e3319;hp=fcee83810a5bcf774d3e13cf9e65ccf3b29e3319;p=stockfish

Only close file if already open

Ensures that the tablebase file is only closed if already open.

Fixes #4268
Closes https://github.com/official-stockfish/Stockfish/pull/4321

No functional change
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