usb: gadget: u_uac1: fix one code style problem

Fix one code style problem.

Signed-off-by: Peter Chen <[e-mail]>
Signed-off-by: Felipe Balbi <[e-mail]>

drivers/usb/gadget/function/u_uac1.c

···
  */
 void gaudio_cleanup(struct gaudio *the_card)
 {
-	if (the_card) {
+	if (the_card)
 		gaudio_close_snd_dev(the_card);
-	}
 }