[gegl] gegl:load: Fix possible double free.

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 498434156e593da0b6601e71b1111c9623af3d30
Author: Axel Viala <axel viala darnuria eu>
Date:   Thu Mar 31 16:49:52 2022 +0200

    gegl:load: Fix possible double free.

 operations/core/load.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
---
diff --git a/operations/core/load.c b/operations/core/load.c
index 89e3f6eed..564857bd4 100644
--- a/operations/core/load.c
+++ b/operations/core/load.c
@@ -213,15 +213,13 @@ do_setup (GeglOperation *operation, const gchar *path, const gchar *uri)
       if ((!g_str_has_prefix (content_type, "image/") &&
            !g_str_has_prefix (content_type, ".")) || uncertain)
         {
-          g_free (content_type);
-
           if (!read_from_stream (stream, &buffer, &size, &error))
             {
               g_warning ("%s", error->message);
               g_clear_error (&error);
               goto cleanup;
             }
-
+          g_free (content_type);
           content_type = g_content_type_guess (filename, buffer, size, NULL);
         }
     }