can: softing: softing_card_shutdown(): add braces around empty body in an 'if' statement

This patch fixes the following warning when building the kernel with "W=1":

    warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

Link: http://lore.kernel.org/r/20201006203748.1750156-3-mkl@pengutronix.de
Fixes: 03fd3cf5a179 ("can: add driver for Softing card")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/softing/softing_main.c b/drivers/net/can/softing/softing_main.c
index 11b0f3b..9d2faaa 100644 (file)
--- a/drivers/net/can/softing/softing_main.c
+++ b/drivers/net/can/softing/softing_main.c
@@ -447,8 +447,9 @@ static void softing_card_shutdown(struct softing *card)
 {
        int fw_up = 0;
 
-       if (mutex_lock_interruptible(&card->fw.lock))
+       if (mutex_lock_interruptible(&card->fw.lock)) {
                /* return -ERESTARTSYS */;
+       }
        fw_up = card->fw.up;
        card->fw.up = 0;