Fixed multi-selection bug, Track https://trac.osgeo.org/grass/ticket/1398.

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@47033 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gui_modules/gselect.py

@@ -233,6 +233,7 @@ class TreeCtrlComboPopup(wx.combo.ComboPopup):
         if not root:
             return
         found = self.FindItem(root, value)
+        
         if found:
             self.value.append(found)
             self.seltree.SelectItem(found)