[metacity] session: fix memory leak

[Alberts Muktupāvels <muktupavels src gnome org>]

commit d0ea205f221c3d895dd9e355bb513917c3c141e9
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Mar 14 20:41:28 2021 +0200

    session: fix memory leak
    
    Coverity CID: #1502682

 src/core/session.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)
---
diff --git a/src/core/session.c b/src/core/session.c
index 6d7ea57b3..5894742c1 100644
--- a/src/core/session.c
+++ b/src/core/session.c
@@ -1104,11 +1104,10 @@ load_state (const char *previous_save_file)
                               previous_save_file,
                               NULL);
 
-  error = NULL;
   if (!g_file_get_contents (session_file,
                             &text,
                             &length,
-                            &error))
+                            NULL))
     {
       char *canonical_session_file = session_file;
 
@@ -1127,7 +1126,6 @@ load_state (const char *previous_save_file)
         {
           /* oh, just give up */
 
-          g_error_free (error);
           g_free (session_file);
           g_free (canonical_session_file);
           return NULL;