Resolve compile error

core/include/logger/u_logger.h

@@ -99,7 +99,7 @@ private:
      * @brief Returns the buffer of a respective area. Primarily used by the Discord Webhook.
      * @param Name of the area which buffer is requested.
      */
-    QQueue<QString> buffer(QString f_areaName);
+    QQueue<QString> buffer(const QString &f_areaName);
 
     /**
      * @brief QMap of all available area buffers.

core/src/logger/u_logger.cpp

@@ -63,7 +63,7 @@ void ULogger::updateAreaBuffer(const QString &f_area, const QString &f_entry)
 
 }
 
-QQueue<QString> ULogger::buffer(QString f_areaName)
+QQueue<QString> ULogger::buffer(const QString& f_areaName)
 {
-
+    return m_bufferMap.value(f_areaName);
 }