cppcheck fixes

plugins/samplesource/filesource/filesourcethread.cpp

@@ -113,7 +113,9 @@ void FileSourceThread::setBuffer(std::size_t chunksize)
         else
         {
             qDebug() << "FileSourceThread::setBuffer: Re-allocate buffer";
+            quint8 *buf = m_buf;
             m_buf = (quint8*) realloc((void*) m_buf, m_bufsize);
+            if (!m_buf) free(buf);
         }
 
         qDebug() << "FileSourceThread::setBuffer: size: " << m_bufsize

sdrbase/mainwindow.cpp

@@ -388,7 +388,7 @@ void MainWindow::loadSettings()
 
     for(int i = 0; i < m_settings.getPresetCount(); ++i)
     {
-    	addPresetToTree(m_settings.getPreset(i));
+        ui->presetTree->setCurrentItem(addPresetToTree(m_settings.getPreset(i)));
     }
 }