fixed possible bug when using line and col input widgets on bottomt right of editor

src/damaris/gui/DamarisGUI.py

@@ -1369,27 +1369,26 @@ get_job_id get_description set_description get_xdata get_ydata set_xdate set_yda
 
     def column_line_widgets_changed_event( self, data=None ):
         page = self.main_notebook.get_current_page( )
-        textview = None
-        newline = None
-        newcol = None
-
         if page == 0:
             textview = self.experiment_script_textview
+            column_indicator = self.experiment_script_column_indicator
             newline = self.experiment_script_line_indicator.get_value_as_int( ) - 1
-            newcol = self.experiment_script_column_indicator.get_value_as_int( ) - 1
+            newcol = column_indicator.get_value_as_int( ) - 1
         elif page == 1:
             textview = self.data_handling_textview
+            column_indicator = self.data_handling_column_indicator
             newline = self.data_handling_line_indicator.get_value_as_int( ) - 1
-            newcol = self.data_handling_column_indicator.get_value_as_int( ) - 1
+            newcol = column_indicator.get_value_as_int( ) - 1
         else:
             print("unknown line/column selector")
+            return False
 
         textbuffer = textview.get_buffer( )
         new_place = textbuffer.get_iter_at_line( newline )
         if not newcol > new_place.get_chars_in_line( ):
             new_place.set_line_offset( newcol )
         else:
-            self.__dict__[ text_name + "_column_indicator" ].set_value( 1 )
+            column_indicator.set_value( 1 )
         if len( textbuffer.get_selection_bounds( ) ) != 0:
             textbuffer.move_mark_by_name( "insert", new_place )
         else:
@@ -3048,7 +3047,6 @@ class MonitorWidgets:
             # Statistics activated?
             if (self.display_statistics_checkbutton.get_active( ) and
                     in_result.uses_statistics( ) and in_result.ready_for_drawing_error( )):
-
                 for i in range( chans ):
                     err = in_result.get_yerr( i )
                     if moving_average is not None: