config: Always write config when migrating

Fixes an issue where OBS 30.1.2 migrations would work on the first
30.2.0 load, but the settings would not persist to disk for further
loads.

src/Config.cpp

@@ -87,6 +87,10 @@ void Config::Load(json config)
 		Save();
 	}
 
+	// If there are migrated settings, write them to disk before processing arguments.
+	if (!config.empty())
+		Save();
+
 	// Process `--websocket_port` override
 	QString portArgument = Utils::Platform::GetCommandLineArgument(CMDLINE_WEBSOCKET_PORT);
 	if (portArgument != "") {
@@ -141,7 +145,9 @@ void Config::Save()
 		config[PARAM_PASSWORD] = ServerPassword;
 	}
 
-	if (!Utils::Json::SetJsonFileContent(configFilePath, config))
+	if (Utils::Json::SetJsonFileContent(configFilePath, config))
+		blog(LOG_DEBUG, "[Config::Save] Saved config.");
+	else
 		blog(LOG_ERROR, "[Config::Save] Failed to write config file!");
 }