[mkgmap-dev] Commit r4910: Fix calculation of minimun resolution in overview map: Use same constant as in MapSplitter so that the tile selection polygon 0x4a is not split as this confuses the Garmin PC programs.

Version mkgmap-r4910 was committed by gerd on Sun, 16 Jul 2023 Fix calculation of minimun resolution in overview map: Use same constant as in MapSplitter so that the tile selection polygon 0x4a is not split as this confuses the Garmin PC programs. http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4910