Fix crash if some columns in .csv file is missing

sdrgui/gui/spectrummarkersdialog.cpp

@@ -19,6 +19,7 @@
 #include <QStandardPaths>
 #include <QColorDialog>
 #include <QFileDialog>
+#include <QDebug>
 
 #include "gui/dialpopup.h"
 #include "util/db.h"
@@ -771,6 +772,8 @@ void SpectrumMarkersDialog::on_aMarkersImport_clicked()
                     m_annotationMarkers.clear();
 
                     while (CSV::readRow(in, &cols))
+                    {
+                        if (cols.size() >= 7)
                         {
                             m_annotationMarkers.push_back(SpectrumAnnotationMarker());
                             m_annotationMarkers.back().m_startFrequency = cols[startCol].toLongLong();
@@ -782,6 +785,11 @@ void SpectrumMarkersDialog::on_aMarkersImport_clicked()
                             int b = cols[blueCol].toInt();
                             m_annotationMarkers.back().m_markerColor = QColor(r, g, b);
                         }
+                        else
+                        {
+                            qWarning() << "SpectrumMarkersDialog::on_aMarkersImport_clicked: Missing data in " << cols;
+                        }
+                    }
 
                     m_annotationMarkerIndex = 0;
                     ui->aMarker->setMaximum(m_annotationMarkers.size() - 1);