Fix boost list_of -> flat_set conversion on MSVC

src/team.cpp

@@ -56,7 +56,7 @@ const int team::default_team_gold_ = 100;
 
 // Update this list of attributes if you change what is used to define a side
 // (excluding those attributes used to define the side's leader).
-const boost::container::flat_set<std::string> team::attributes = boost::assign::list_of("ai_config")
+const boost::container::flat_set<std::string> team::attributes = boost::assign::list_of<std::string>("ai_config")
 	("carryover_add")("carryover_percentage")("color")("controller")("current_player")("defeat_condition")("flag")
 	("flag_icon")("fog")("fog_data")("gold")("hidden")("income")
 	("no_leader")("objectives")("objectives_changed")("persistent")("lost")
@@ -70,7 +70,7 @@ const boost::container::flat_set<std::string> team::attributes = boost::assign::
 	("faction_from_recruit")("faction_name")("gold_lock")("income_lock")
 	("leader")("random_leader")("team_lock")("terrain_liked")
 	("user_description")("default_recruit")("controller_lock")("chose_random")
-	("description");
+	("description").convert_to_container<boost::container::flat_set<std::string>>();
 
 team::team_info::team_info() :
 	name(),