x86: fix missing led variable warning during boot

Fixes following warning during the boot:

 WARNING: Variable 'led' does not exist or is not an array/object

Signed-off-by: Petr Štetiar <ynezz@true.cz>

diff --git a/target/linux/x86/base-files/etc/diag.sh b/target/linux/x86/base-files/etc/diag.sh
index 3af4b235837b85bca7457fe910267bfff28c7264..d043e4f03535468cb29d505a532281f951b21209 100644 (file)
--- a/target/linux/x86/base-files/etc/diag.sh
+++ b/target/linux/x86/base-files/etc/diag.sh
@@ -20,6 +20,8 @@ preinit_match_diag_led() {
        json_init
        json_load "$(cat $CFG)"
        json_get_keys keys led
+       json_is_a led object || return
+
        json_select led
        for key in $keys; do
                json_select "$key"