[pygobject] pygi-argument: Fix -Wformat warning on 32 bit builds

[Colin Walters <walters src gnome org>]

commit a2e73c109f3ed6080eabc85810e624b9f984317e
Author: Colin Walters <walters verbum org>
Date:   Tue Jul 31 09:02:24 2012 -0400

    pygi-argument: Fix -Wformat warning on 32 bit builds

 gi/pygi-argument.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gi/pygi-argument.c b/gi/pygi-argument.c
index b73973e..737342a 100644
--- a/gi/pygi-argument.c
+++ b/gi/pygi-argument.c
@@ -438,8 +438,8 @@ check_number_release:
             }
 
             if (size != 1) {
-                PyErr_Format (PyExc_TypeError, "Must be a one character string, not %ld characters",
-                              size);
+                PyErr_Format (PyExc_TypeError, "Must be a one character string, not %" G_GINT64_FORMAT " characters",
+                              (gint64)size);
                 retval = 0;
                 break;
             }