Code review comment for lp:~widelands-dev/widelands/ferry

This is really a nice feature. Played two games (Map Twinkling Waves and The Nile) a lot but found no strange issues anymore. There is one small thing:

If you have the option 'Start building road after placing a flag' turned on, and place a flag at a coast, roadbuilding mode is immediately enabled. So if you wanted to start building a waterway, you have to make few more clicks to get into 'build waterway' mode (cancel roadbuilding -> click on flag -> click on build waterway).

No idea how to solve this in an easy manner. Just show the flag action window is a flag is placed where also a waterway can be build, regardless of the option 'Start building road after placing a flag'?