Dont append main thread's ID on fatal error dialog (#13021)

rpcs3/main.cpp

@@ -100,12 +100,12 @@ LOG_CHANNEL(q_debug, "QDEBUG");
 	std::string buf;
 
 	// Check if thread id is in string
-	if (_text.find("\nThread id = "sv) == umax)
+	if (_text.find("\nThread id = "sv) == umax && !thread_ctrl::is_main())
 	{
 		// Copy only when needed
 		buf = std::string(_text);
 
-		// Always print thread id
+		// Append thread id if it isn't already, except on main thread
 		fmt::append(buf, "\n\nThread id = %u.", thread_ctrl::get_tid());
 	}