[mutter] Fix string format in startup notification to be a gint64

[Olav Vitters <ovitters src gnome org>]

commit c325a0bebfd8d27fc2f066efb3146b42e7a9a6a7
Author: Luca Bruno <lucabru src gnome org>
Date:   Mon Jul 4 22:34:31 2016 +0200

    Fix string format in startup notification to be a gint64
    
    https://bugzilla.gnome.org/show_bug.cgi?id=762407

 src/core/startup-notification.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/core/startup-notification.c b/src/core/startup-notification.c
index cb58c9e..df317f6 100644
--- a/src/core/startup-notification.c
+++ b/src/core/startup-notification.c
@@ -418,7 +418,7 @@ collect_timed_out_foreach (void *element,
   elapsed = ctod->now - timestamp;
 
   meta_topic (META_DEBUG_STARTUP,
-              "Sequence used %ld ms vs. %d max: %s\n",
+              "Sequence used %" G_GINT64_FORMAT " ms vs. %d max: %s\n",
               elapsed, STARTUP_TIMEOUT,
               meta_startup_notification_sequence_get_id (sequence));