_check_drec(): Made oid2name logic more obvious.

src/ZODB/FileStorage/fsoids.py

@@ -153,6 +153,7 @@ class Tracer(object):
                           "at", drec.pos)
                 result = True
                 self.oids[oid] += 1
+                self.oid2name[oid] = oidclass
 
             for ref, klass in get_refs(pick):
                 if klass is None:
@@ -172,9 +173,6 @@ class Tracer(object):
                               "at", pos)
                     result = True
 
-            if oidclass is not None:
-                self.oid2name[oid] = oidclass
-
         elif oid in self.oids:
             # Or maybe it's a version abort.
             self._msg(oid, tid, "creation undo at", pos)