Change database connection pool callback to clean up old references.

git-svn-id: http://svn.mythtv.org/svn/branches/release-0-24-fixes@27085 7dbf422c-18fa-0310-86e9-fd20926502f2

Author: wagnerrp

mythtv/bindings/python/MythTV/connections.py

@@ -212,7 +212,7 @@ def cursor(self, log=None, type=LoggedCursor):
 
     def _callback(self, ref):
         refid = id(ref)
-        connid = self._refs[refid][1]
+        ref, connid = self._refs.pop(refid)
         if connid in self._inuse:
             self.release(connid)