# HG changeset patch
# User Boris Feld <boris.feld@octobus.net>
# Date 1508333931 -7200
# Node ID aa849cf5d089d9de7cb02b53b1c1667d4a0fbc81
# Parent  29f52e7966dd646ffa75ab65946ef2030017f72b
obsfate: fix obsfate_printer with empty date list

When the list of dates is empty, `min` and `max` would raises a ValueError.
Protect against this case by checking that the date list is not empty.

I didn't add a test because I couldn't find a reproducing test case.

diff -r 29f52e7966dd -r aa849cf5d089 mercurial/obsutil.py
--- a/mercurial/obsutil.py	Tue Oct 17 16:54:31 2017 +0200
+++ b/mercurial/obsutil.py	Wed Oct 18 15:38:51 2017 +0200
@@ -822,7 +822,7 @@
     # Date
     dates = markersdates(markers)
 
-    if verbose:
+    if dates and verbose:
         min_date = min(dates)
         max_date = max(dates)