From: Benjamin Mako Hill <mako@atdot.cc>
Date: Fri, 28 Apr 2023 21:21:21 +0000 (-0700)
Subject: added a line to fix persistence with deleted revs
X-Git-Url: https://code.communitydata.science/mediawiki_dump_tools.git/commitdiff_plain/556285b198db65f81f3fbd9d5eec59e94c2720a0?hp=556285b198db65f81f3fbd9d5eec59e94c2720a0

added a line to fix persistence with deleted revs

kaylea realized that we need to initialize the old_rev_data dictionary or it
fails when the first revision to a page is deleted. This patch is from kaylea
and modified by mako.
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