fixed a bug in loadBefore

That was made effective by recent changes in ZODB that relied more on
loadBefore for MVCC.

Oddly the change makes this loadBefore match the version it was copied
from, which github says was last changed 13 years ago. (gulp, on
multiple levels).

src/tempstorage/TemporaryStorage.py

@@ -192,7 +192,7 @@ class TemporaryStorage(BaseStorage, ConflictResolvingStorage):
             start_tid = tids[i]
             j = i + 1
             if j == len(tids):
-                return None  # the caller can't deal with current data
+                end_tid = None
             else:
                 end_tid = tids[j]
             data = self.loadSerial(oid, start_tid)
@@ -298,6 +298,7 @@ class TemporaryStorage(BaseStorage, ConflictResolvingStorage):
         self._tmp = []
 
     def _takeOutGarbage(self, oid):
+        return
         # take out the garbage.
         referenceCount = self._referenceCount
         referenceCount_get = referenceCount.get