change steam_api headers

public/steam/isteammatchmaking.h

@@ -103,6 +103,7 @@ public:
 		}
 	*/
 	// 
+	CALL_RESULT( LobbyMatchList_t )
 	virtual SteamAPICall_t RequestLobbyList() = 0;
 	// filters for lobbies
 	// this needs to be called before RequestLobbyList() to take effect
@@ -133,12 +134,14 @@ public:
 	// this is an asynchronous request
 	// results will be returned by LobbyCreated_t callback and call result; lobby is joined & ready to use at this point
 	// a LobbyEnter_t callback will also be received (since the local user is joining their own lobby)
+	CALL_RESULT( LobbyCreated_t )
 	virtual SteamAPICall_t CreateLobby( ELobbyType eLobbyType, int cMaxMembers ) = 0;
 
 	// Joins an existing lobby
 	// this is an asynchronous request
 	// results will be returned by LobbyEnter_t callback & call result, check m_EChatRoomEnterResponse to see if was successful
 	// lobby metadata is available to use immediately on this call completing
+	CALL_RESULT( LobbyEnter_t )
 	virtual SteamAPICall_t JoinLobby( CSteamID steamIDLobby ) = 0;
 
 	// Leave a lobby; this will take effect immediately on the client side
@@ -253,6 +256,7 @@ public:
 	// after completion, the local user will no longer be the owner
 	virtual void CheckForPSNGameBootInvite( unsigned int iGameBootAttributes  ) = 0;
 #endif
+	CALL_BACK( LobbyChatUpdate_t )
 };
 #define STEAMMATCHMAKING_INTERFACE_VERSION "SteamMatchMaking009"