lib: handle when get_sessions() returns NULL more gracefully

sd_get_sessions() can return NULL in some rare cases, so
make sure we don't fall over when it does.

1 files changed, 6 insertions, 4 deletions

diff --git a/src/libaccountsservice/act-user-manager.c b/src/libaccountsservice/act-user-manager.c
index 022690f..11bc859 100644
--- a/src/libaccountsservice/act-user-manager.c
+++ b/src/libaccountsservice/act-user-manager.c
@@ -1594,11 +1594,13 @@ reload_systemd_sessions (ActUserManager *manager)
         _remove_stale_systemd_sessions (manager, systemd_sessions);
         g_hash_table_unref (systemd_sessions);
 
-        for (i = 0; sessions[i]; i ++) {
-                free (sessions[i]);
-        }
+        if (sessions != NULL) {
+                for (i = 0; sessions[i]; i ++) {
+                        free (sessions[i]);
+                }
 
-        free (sessions);
+                free (sessions);
+        }
 }
 
 #endif