Avoid redundant retry

Avoid attempting to recast to `int` when it had just failed.

wx/lib/intctrl.py

@@ -859,7 +859,7 @@ class IntCtrl(wx.TextCtrl):
             try:
                 return int( value )
             except ValueError:
-                if self.IsLongAllowed():
+                if self.IsLongAllowed() and (LONGTYPE is not int):
                     return LONGTYPE( value )
                 else:
                     raise