change/restore ticket field leads to adding fake ticket change

[pkou at ua.fm]

When ticket field is changed, then original value is saved for tracking ticket changes. However, if a field is changed to some value and then to original value, then this change is tracked.

Patch for trunk:

Index: Ticket.py
===================================================================
--- Ticket.py   (revision 1667)
+++ Ticket.py   (working copy)
@@ -53,6 +53,8 @@
             return
         if not self._old.has_key(name):
             self._old[name] = self.get(name, None)
+        else if self._old[name] == value:
+            del self._old[name]
         dict.__setitem__(self, name, value)

     def _forget_changes(self):

(In preparation to #869)

[cmlenz]

Heh, else if doesn't really work in python ;-)

[cmlenz]

Fixed in [1668].