hw/ppc/virtex_ml507: Prefer local over global variable

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Edgar E. Iglesias <edgar@zeroasic.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221216145709.271940-4-shentey@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

hw/ppc/virtex_ml507.c

@@ -157,7 +157,7 @@ static int xilinx_load_device_tree(MachineState *machine,
     int r;
     const char *dtb_filename;
 
-    dtb_filename = current_machine->dtb;
+    dtb_filename = machine->dtb;
     if (dtb_filename) {
         fdt = load_device_tree(dtb_filename, &fdt_size);
         if (!fdt) {