[glib] gio: Clear error properly to prevent crash

[Ross Lagerwall <rossl src gnome org>]

commit 1a037b140893433757400267d00a3a4437c3cdb7
Author: Ross Lagerwall <rosslagerwall gmail com>
Date:   Tue Oct 29 14:53:38 2013 +0200

    gio: Clear error properly to prevent crash
    
    https://bugzilla.gnome.org/show_bug.cgi?id=711070

 gio/gfile.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gio/gfile.c b/gio/gfile.c
index bf936ec..9e9d79d 100644
--- a/gio/gfile.c
+++ b/gio/gfile.c
@@ -2505,7 +2505,7 @@ copy_symlink (GFile           *destination,
       if (!tried_delete && (flags & G_FILE_COPY_OVERWRITE) &&
           my_error->domain == G_IO_ERROR && my_error->code == G_IO_ERROR_EXISTS)
         {
-          g_error_free (my_error);
+          g_clear_error (&my_error);
 
           /* Don't overwrite if the destination is a directory */
           info = g_file_query_info (destination, G_FILE_ATTRIBUTE_STANDARD_TYPE,