fix side specific variables

this fixes wesnoth.get_side_variable and wesnoth.set_side_variable

src/carryover.cpp

@@ -114,6 +114,7 @@ void carryover::to_config(config& cfg){
 	side["add"] = add_;
 	side["current_player"] = current_player_;
 	side["previous_recruits"] = get_recruits(false);
+	side.add_child("variables", variables_);
 	for(const config & u_cfg : recall_list_) {
 		side.add_child("unit", u_cfg);
 	}

src/scripting/game_lua_kernel.cpp

@@ -1117,7 +1117,7 @@ int game_lua_kernel::intf_get_side_variable(lua_State *L)
 	if(side_index >= teams().size()) {
 		return luaL_argerror(L, 1, "invalid side number");
 	}
-	char const *m = luaL_checkstring(L, 1);
+	char const *m = luaL_checkstring(L, 2);
 	variable_access_const v(m, teams()[side_index].variables());
 	return luaW_pushvariable(L, v) ? 1 : 0;
 }
@@ -1134,10 +1134,10 @@ int game_lua_kernel::intf_set_side_variable(lua_State *L)
 	if(side_index >= teams().size()) {
 		return luaL_argerror(L, 1, "invalid side number");
 	}
-	char const *m = luaL_checkstring(L, 1);
+	char const *m = luaL_checkstring(L, 2);
 	//TODO: maybe support removing values with an empty arg3.
 	variable_access_create v(m, teams()[side_index].variables());
-	luaW_checkvariable(L, v, 2);
+	luaW_checkvariable(L, v, 3);
 	return 0;
 }