Userland: Get rid of the OwnPtr<...> boilerplate code for IPC handlers

Author: https://github.com/gunnarbeutner
Commit: 7cf2839a26
Pull-request: https://github.com/SerenityOS/serenity/pull/6805
Reviewed-by: https://github.com/alimpfard

Userland/DevTools/HackStudio/LanguageServers/ClientConnection.cpp

@@ -30,7 +30,7 @@ void ClientConnection::die()
     exit(0);
 }
 
-OwnPtr<Messages::LanguageServer::GreetResponse> ClientConnection::handle(const Messages::LanguageServer::Greet& message)
+Messages::LanguageServer::GreetResponse ClientConnection::handle(const Messages::LanguageServer::Greet& message)
 {
     m_filedb.set_project_root(message.project_root());
     if (unveil(message.project_root().characters(), "r") < 0) {
@@ -41,7 +41,7 @@ OwnPtr<Messages::LanguageServer::GreetResponse> ClientConnection::handle(const M
         perror("unveil");
         exit(1);
     }
-    return make<Messages::LanguageServer::GreetResponse>();
+    return {};
 }
 
 void ClientConnection::handle(const Messages::LanguageServer::FileOpened& message)