fix(MainDb): avoid old c-style cast

src/db/main-db.cpp

@@ -601,7 +601,7 @@ shared_ptr<EventLog> MainDbPrivate::selectConferenceChatMessageEvent (
 		chatMessage->setIsSecured(bool(row.get<int>(9)));
 
 		ChatMessagePrivate *dChatMessage = chatMessage->getPrivate();
-		ChatMessage::State messageState = (ChatMessage::State) row.get<int>(7);
+		ChatMessage::State messageState = ChatMessage::State(row.get<int>(7));
 		// This is necessary if linphone has crashed while sending a message. It will set the correct state so the user can resend it.
 		if (messageState == ChatMessage::State::Idle || messageState == ChatMessage::State::InProgress)
 			messageState = ChatMessage::State::NotDelivered;