dbus: Fix Scan invalid args reporting (uninitialize variable)

Must initialize key to be NULL since it can be used in an error
message. If the Scan method did not actually include any dict entries,
the uninitialized pointer was used and this could result in
wpa_supplicant crashing.

diff --git a/wpa_supplicant/dbus/dbus_new_handlers.c b/wpa_supplicant/dbus/dbus_new_handlers.c
index 8ed95cb6c7b4411883a8bb0d952034e8b542d587..615896225ae5d1149c7c84006cbbb2f675735064 100644 (file)
--- a/wpa_supplicant/dbus/dbus_new_handlers.c
+++ b/wpa_supplicant/dbus/dbus_new_handlers.c
@@ -905,7 +905,7 @@ DBusMessage * wpas_dbus_handler_scan(DBusMessage *message,
        DBusMessage * reply = NULL;
        DBusMessageIter iter, dict_iter, entry_iter, variant_iter,
                array_iter, sub_array_iter;
-       char *key, *val, *type = NULL;
+       char *key = NULL, *val, *type = NULL;
        int len;
        int freqs_num = 0;
        int ssids_num = 0;