[glib] Fixed annotation for g_log_variant()

[Jonh Wendell <jwendell src gnome org>]

commit 063e279a561aa5370942401a42b00e17e575c504
Author: Jonh Wendell <jonh wendell redhat com>
Date:   Sat Sep 17 16:25:31 2016 -0300

    Fixed annotation for g_log_variant()

 glib/gmessages.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/glib/gmessages.c b/glib/gmessages.c
index 632547a..8fc33c4 100644
--- a/glib/gmessages.c
+++ b/glib/gmessages.c
@@ -1604,7 +1604,7 @@ g_log_structured (const gchar    *log_domain,
 
 /**
  * g_log_variant:
- * @log_domain: log domain, usually %G_LOG_DOMAIN
+ * @log_domain: (allow-none): log domain, usually %G_LOG_DOMAIN
  * @log_level: log level, either from #GLogLevelFlags, or a user-defined
  *    level
  * @fields: a dictionary (#GVariant of the type %G_VARIANT_TYPE_VARDICT)