Typo in question/type/numerical/db/upgrade.php

I suspect that the upgrade step 2009100101 in numerical qtype upgrade has a typo. The code

$record->instructions = text_to_html($record->questiontext, false, false, true);

copies the question text into the numerical units instructions. Was that intentional? Note that the doc block above this code is a bit confusing and it indicates that this part was copied from qtype_match so this text_to_html() conversion could be a relict of that.

Anyway, on backup19 conversion, I am not replaying this line yet unless it is confirmed that the question text should be really copied into the instructions.