# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1513827340 -3600
# Node ID 895e16385a4f9fe2b0420e03d0560fb628b2dac8
# Parent  ab5172ba3c81fa3fbe406f97b76ed6440c911317
stablerange: be more cautious when deleting the sql connection

This triggered some crash in further development. This also match what is done
elsewhere with this attribute.

diff -r ab5172ba3c81 -r 895e16385a4f hgext3rd/evolve/stablerangecache.py
--- a/hgext3rd/evolve/stablerangecache.py	Thu Dec 21 03:42:54 2017 +0100
+++ b/hgext3rd/evolve/stablerangecache.py	Thu Dec 21 04:35:40 2017 +0100
@@ -267,7 +267,8 @@
 
     def clear(self, reset=False):
         super(stablerangesql, self).clear(reset=reset)
-        del self._con
+        if '_con' in vars(self):
+            del self._con
         self._subrangescache.clear()
 
     def load(self, repo):