source4/scripting python: convert 'except X, e' to 'except X as e'

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

source4/scripting/bin/w32err_code.py

@@ -113,7 +113,7 @@ class WerrorHtmlParser(object):
             for line in fp:
                 html_str += line.strip()
             fp.close()
-        except IOError, e:
+        except IOError as e:
             print "error loading url: " + e.strerror
             pass