[gtk/4.0-backports: 7/53] Avoid a buffer overrun

[Matthias Clasen <matthiasc src gnome org>]

commit 100de32cff012e980109ebbefba2c938775eddac
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Jan 22 13:56:04 2021 -0500

    Avoid a buffer overrun
    
    We were putting the '\0' behind the end. Oops.

 gtk/language-names.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/language-names.c b/gtk/language-names.c
index 087f86b922..16deef3bea 100644
--- a/gtk/language-names.c
+++ b/gtk/language-names.c
@@ -164,7 +164,7 @@ languages_parse_start_tag (GMarkupParseContext  *ctx,
   for (i = 0; i < G_N_ELEMENTS (long_names); i++)
     {
       if (g_str_has_prefix (display_name, long_names[i]))
-        display_name[strlen (long_names[i]) + 1] = '\0';
+        display_name[strlen (long_names[i])] = '\0';
     }