Get rid of message "DEBUG: bool QCPLayoutGrid::addElement(int, int,...

Get rid of message "DEBUG: bool QCPLayoutGrid::addElement(int, int, QCPLayoutElement*) There is already an element in the specified row/column: 0 1"

GUI/Views/IntensityDataWidgets/ColorMap.cpp

@@ -414,7 +414,8 @@ void ColorMap::setColorScaleVisible(bool visibility_flag)
     m_colorBarLayout->setVisible(visibility_flag);
     if (visibility_flag) {
         // add it to the right of the main axis rect
-        m_customPlot->plotLayout()->addElement(0, 1, m_colorBarLayout);
+        if (!m_customPlot->plotLayout()->hasElement(0, 1))
+            m_customPlot->plotLayout()->addElement(0, 1, m_colorBarLayout);
     } else {
         m_customPlot->plotLayout()->take(m_colorBarLayout);
         m_customPlot->plotLayout()->simplify();