# HG changeset patch
# User Sylvain Thénault <sylvain.thenault@logilab.fr>
# Date 1310384704 -7200
# Node ID 91a984ba420f0b225ef15a998b09950d53ccbed0
# Parent  cb2459aaa7d78dbbadaa59b841ce29a3a2c85055
[native source] fix bug introduced in 7645:cb2459aaa7d7: fetchone() may return None

diff -r cb2459aaa7d7 -r 91a984ba420f server/sources/native.py
--- a/server/sources/native.py	Mon Jul 11 13:23:37 2011 +0200
+++ b/server/sources/native.py	Mon Jul 11 13:45:04 2011 +0200
@@ -850,7 +850,9 @@
 
     def _eid_type_source(self, session, eid, sql, _retry=True):
         try:
-            return self.doexec(session, sql).fetchone()
+            res = self.doexec(session, sql).fetchone()
+            if res is not None:
+                return res
         except (self.OperationalError, self.InterfaceError):
             if session.mode == 'read' and _retry:
                 self.warning("trying to reconnect (eid_type_source())")