[easytag] Fix memory leak in Log_Format_Date()

[David King <davidk src gnome org>]

commit afad898b0394b6eafeaf6f89cf411ac5c0e96ab0
Author: David King <amigadave amigadave com>
Date:   Tue Jan 21 19:42:09 2014 +0000

    Fix memory leak in Log_Format_Date()

 src/log.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/log.c b/src/log.c
index 577fb63..1ab65f0 100644
--- a/src/log.c
+++ b/src/log.c
@@ -231,6 +231,8 @@ Log_Format_Date (void)
     /* Time without date in current locale. */
     time = g_date_time_format (dt, "%X");
 
+    g_date_time_unref (dt);
+
     return time;
 }