vl: Eliminate a superfluous local variable

CODING_STYLE frowns upon mixing declarations and statements.  main()
has such a declaration.  Clean up by eliminating the variable.
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

vl.c

@@ -4404,7 +4404,8 @@ int main(int argc, char **argv, char **envp)
 
     qdev_machine_init();
 
-    QEMUMachineInitArgs args = { .machine = machine,
+    current_machine->init_args = (QEMUMachineInitArgs) {
+        .machine = machine,
         .ram_size = ram_size,
         .boot_order = boot_order,
         .kernel_filename = kernel_filename,
@@ -4412,7 +4413,6 @@ int main(int argc, char **argv, char **envp)
         .initrd_filename = initrd_filename,
         .cpu_model = cpu_model };
 
-    current_machine->init_args = args;
     machine->init(&current_machine->init_args);
 
     audio_init();