wxGUI: define WindowsError for Python 3 on non-Windows platforms

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@73256 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/nviz/wxnviz.py

@@ -44,6 +44,10 @@ import wx
 from ctypes import *
 
 try:
+    WindowsError
+except NameError:
+    WindowsError = OSError
+try:
     from grass.lib.gis import *
     from grass.lib.raster3d import *
     from grass.lib.vector import *

gui/wxpython/vdigit/wxdigit.py

@@ -40,6 +40,10 @@ from core.utils import _
 from vdigit.wxdisplay import DisplayDriver, GetLastError
 
 try:
+    WindowsError
+except NameError:
+    WindowsError = OSError
+try:
     from grass.lib.gis import *
     from grass.lib.vector import *
     from grass.lib.vedit import *

gui/wxpython/vdigit/wxdisplay.py

@@ -30,6 +30,10 @@ from core.utils import _
 from gui_core.wrap import Rect
 
 try:
+    WindowsError
+except NameError:
+    WindowsError = OSError
+try:
     from grass.lib.gis import *
     from grass.lib.vector import *
     from grass.lib.vedit import *