When the restart command is issued, a normal map is always spawned.
This improvement takes into account the current state of _file_to_saveload to check if a savegame/scenario/heightmap was previously loaded, and loads the same resource again.
If the game was started loading a savegame or scenario, auto-restart will load a new random map.
This is inconsistent with the case in which a heightmap was loaded, as in that case the heightmap is kept as a basis for a new game.
This proposal solves this heterogeneity be considering the originally loaded resource shall be kept, hence savegames & scenarios shall be reloaded
