[office-runner] Fix "time to better time" calculation

[Alexandre Franke <afranke src gnome org>]

commit d0d68044aab9b0141907b506f7a3ac50a248eccf
Author: Alexandre Franke <alexandre franke gmail com>
Date:   Thu Apr 25 12:11:54 2013 +0200

    Fix "time to better time" calculation
    
    The returned time was the better time, not the difference between
    current time and better time as expected

 src/office-runner.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/office-runner.c b/src/office-runner.c
index 3ed1d14..47ddb12 100644
--- a/src/office-runner.c
+++ b/src/office-runner.c
@@ -326,7 +326,7 @@ time_to_better_time_text (OfficeRunner *run)
 
        l = l->prev;
        o = l->data;
-       return elapsed_to_text (o->time);
+       return elapsed_to_text (run->elapsed - o->time);
 }
 
 static gboolean