g.gui.tplot: working on https://trac.osgeo.org/grass/ticket/3612

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@73032 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/tplot/frame.py

@@ -124,6 +124,7 @@ class TplotFrame(wx.Frame):
         self.plotNameListR = []
         self.plotNameListV = []
         self.poi = None
+        self.csvpath = None
 
     def __del__(self):
         """Close the database interface and stop the messenger and C-interface