wxGUI: AddGrowableRow must be after adding rows for wxPython 3

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@62491 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/modules/colorrules.py

@@ -490,8 +490,6 @@ class ColorTable(wx.Frame):
     def _createBody(self, parent):
         """Create dialog body consisting of rules and preview"""
         bodySizer =  wx.GridBagSizer(hgap = 5, vgap = 5)
-        bodySizer.AddGrowableRow(1)
-        bodySizer.AddGrowableCol(2)
 
         row = 0
         # label with range
@@ -535,6 +533,9 @@ class ColorTable(wx.Frame):
                       flag = wx.ALIGN_CENTER_VERTICAL)
         bodySizer.Add(item = self.rulesPanel.btnAdd, pos = (row, 1))
         
+        bodySizer.AddGrowableRow(1)
+        bodySizer.AddGrowableCol(2)
+
         return bodySizer    
         
     def InitDisplay(self):