[gdm/session-selection-again: 3/3] session: Fix gdm_session_is_wayland_session

[Ray Strode <halfline src gnome org>]

commit a3747bcf06d86a344af7cec839a6eb10478fe59d
Author: Ray Strode <rstrode redhat com>
Date:   Wed Jul 28 12:13:57 2021 -0400

    session: Fix gdm_session_is_wayland_session
    
    gdm_session_is_wayland_session has two problems:
    
    1. it's leaking the full patch returned
    2. It's not honoring the supported-session-types
    preference ordered list when determining which session to pick.
    
    This commit fixes both issues.

 daemon/gdm-session.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)
---
diff --git a/daemon/gdm-session.c b/daemon/gdm-session.c
index e3e6410d2..11762bfb5 100644
--- a/daemon/gdm-session.c
+++ b/daemon/gdm-session.c
@@ -3204,21 +3204,19 @@ gdm_session_is_wayland_session (GdmSession *self)
 {
         GKeyFile   *key_file;
         gboolean    is_wayland_session = FALSE;
-        char       *filename;
-        char       *full_path = NULL;
+        char            *filename;
+        g_autofree char *full_path = NULL;
 
         g_return_val_if_fail (self != NULL, FALSE);
         g_return_val_if_fail (GDM_IS_SESSION (self), FALSE);
 
         filename = get_session_filename (self);
 
-        if (supports_session_type (self, "wayland")) {
-               key_file = load_key_file_for_file (self, filename, "wayland", &full_path);
+        key_file = load_key_file_for_file (self, filename, NULL, &full_path);
 
-               if (key_file == NULL) {
-                       goto out;
-               }
-       }
+        if (key_file == NULL) {
+                goto out;
+        }
 
         if (full_path != NULL && strstr (full_path, "/wayland-sessions/") != NULL) {
                 is_wayland_session = TRUE;