[gimp] plug-ins: fix wrong data freeing.

[Jehan <jehanp src gnome org>]

commit e01c37c3dd468f66fd3460892b22b3bf989f86f7
Author: Jehan <jehan girinstud io>
Date:   Fri Oct 1 11:47:27 2021 +0200

    plug-ins: fix wrong data freeing.
    
    `filename` was being leaked while `file` was not to be freed yet.
    
    Thanks to Massimo for noticing.

 plug-ins/common/file-xmc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/plug-ins/common/file-xmc.c b/plug-ins/common/file-xmc.c
index e41ec92741..c4900c820e 100644
--- a/plug-ins/common/file-xmc.c
+++ b/plug-ins/common/file-xmc.c
@@ -898,7 +898,7 @@ load_thumbnail (GFile   *file,
 
   filename = g_file_get_path (file);
   fp = g_fopen (filename, "rb");
-  g_free (file);
+  g_free (filename);
 
   if (! fp)
     {