[gegl] tools/operations_html: fix compilation warnings

[Øyvind Kolås <ok src gnome org>]

commit 2107d0a54a4c275059a568860837219d4e39761f
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu May 4 17:20:21 2017 +0200

    tools/operations_html: fix compilation warnings
    
    bug #782163

 tools/operations_html.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/tools/operations_html.c b/tools/operations_html.c
index fccc0df..d5d8364 100644
--- a/tools/operations_html.c
+++ b/tools/operations_html.c
@@ -534,7 +534,7 @@ main (gint argc, gchar **argv)
       g_string_append_printf (s, "</dl>");
 
       g_string_append_printf (s, "</div>");
-      g_string_append_printf (s, html_post);
+      g_string_append (s, html_post);
       {
         gchar *html_name = g_strdup_printf ("%s.html", name);
         gchar *colon = strchr (html_name, ':');
@@ -628,7 +628,7 @@ all:
       }
           }
         }
-        g_string_append_printf (s, html_post);
+        g_string_append (s, html_post);
 
       {
         gchar *html_name = g_strdup_printf ("%s.html", category);