[gedit] commands-file: minor code improvement

[Sébastien Wilmet <swilmet src gnome org>]

commit 827a227a123e8252359b1948f60f92311285b9fe
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Jun 6 20:06:09 2020 +0200

    commands-file: minor code improvement

 gedit/gedit-commands-file.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gedit/gedit-commands-file.c b/gedit/gedit-commands-file.c
index ab2afa7da..12a61e31a 100644
--- a/gedit/gedit-commands-file.c
+++ b/gedit/gedit-commands-file.c
@@ -422,9 +422,9 @@ _gedit_cmd_file_open (GSimpleAction *action,
 
        gedit_debug (DEBUG_COMMANDS);
 
-       if (GEDIT_IS_WINDOW (user_data))
+       if (user_data != NULL)
        {
-               window = user_data;
+               window = GEDIT_WINDOW (user_data);
        }
 
        if (window != NULL)