[meld] meldapp: Fix bad error logging

[Kai Willadsen <kaiw src gnome org>]

commit c0476b2199abbbded8caee228ba661e58338f226
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Wed Aug 16 09:07:32 2017 +1000

    meldapp: Fix bad error logging

 meld/meldapp.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meld/meldapp.py b/meld/meldapp.py
index 2aa0906..b109967 100644
--- a/meld/meldapp.py
+++ b/meld/meldapp.py
@@ -333,8 +333,8 @@ class MeldApp(Gtk.Application):
                     auto_merge=auto_merge, new_tab=options.newtab,
                     focus=i == 0)
             except ValueError as err:
-                log.debug("Couldn't open comparison: %s", error, exc_info=True)
                 error = err
+                log.debug("Couldn't open comparison: %s", error, exc_info=True)
             else:
                 if i > 0:
                     continue