[pango] Fix a C99 strftime incantation

[Matthias Clasen <matthiasc src gnome org>]

commit 5b21b68299ceb33d42a8b76669ceeefe5c099825
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Aug 1 23:56:04 2019 -0400

    Fix a C99 strftime incantation
    
    This is problematic when building pango as subproject
    of gtk on the win32 ci.

 tools/gen-script-for-lang.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/tools/gen-script-for-lang.c b/tools/gen-script-for-lang.c
index 2f439a4e..b3238f85 100644
--- a/tools/gen-script-for-lang.c
+++ b/tools/gen-script-for-lang.c
@@ -253,7 +253,7 @@ int main (void)
       max_script_len = MAX (max_script_len, j);
     }
 
-  if ((t = time(NULL), tmp = localtime (&t)) && strftime(date_buf, sizeof(date_buf), "%F", tmp))
+  if ((t = time(NULL), tmp = localtime (&t)) && strftime(date_buf, sizeof(date_buf), "%Y-%m-%d", tmp))
     date_str = date_buf;
 
   fc_version = FcGetVersion ();