wxGUI: fix problematic string (wrong translation can break adding new map layers)

       (merge https://trac.osgeo.org/grass/changeset/49060 from devbr6)


git-svn-id: https://svn.osgeo.org/grass/grass/trunk@49061 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gui_modules/gselect.py

@@ -342,7 +342,7 @@ class TreeCtrlComboPopup(wx.combo.ComboPopup):
         
         first_mapset = None
         for mapset in mapsets:
-            mapset_node = self.AddItem(_('Mapset:') + ' ' + mapset)
+            mapset_node = self.AddItem(_('Mapset') + ': ' + mapset)
             if not first_mapset:
                 first_mapset = mapset_node