[mkgmap-dev] Commit r4793: revert major bug in relation handling that was introduced with r4784 in the low-res-opt branch

Version mkgmap-r4793 was committed by gerd on Sat, 26 Jun 2021 revert major bug in relation handling that was introduced with r4784 in the low-res-opt branch http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4793