(svn r21999) -Fix [FS#4474] (r21969): Use 'very low' industry density for generating industries in the SE.

src/industry_cmd.cpp

@@ -1903,7 +1903,7 @@ static uint GetNumberOfIndustries()
 	};
 
 	assert(_settings_game.difficulty.number_industries < lengthof(numof_industry_table));
-	uint difficulty = (_game_mode != GM_EDITOR) ? _settings_game.difficulty.number_industries : 1;
+	uint difficulty = (_game_mode != GM_EDITOR) ? _settings_game.difficulty.number_industries : 2;
 	return ScaleByMapSize(numof_industry_table[difficulty]);
 }