Fixes the following W=1 kernel build warning(s):

 drivers/net/wireless/broadcom/b43legacy/main.c: In function ‘b43legacy_interrupt_tasklet’:
 drivers/net/wireless/broadcom/b43legacy/main.c:1344:3: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

Cc: Larry Finger <redacted>
Cc: Kalle Valo <redacted>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Martin Langer <redacted>
Cc: Stefano Brivio <redacted>
Cc: Michael Buesch <m@bues.ch>
Cc: van Dyk <redacted>
Cc: Andreas Jaggi <redacted>
Cc: linux-wireless@vger.kernel.org
Cc: b43-dev@lists.infradead.org
Cc: netdev@vger.kernel.org
Signed-off-by: Lee Jones <redacted>
---
 drivers/net/wireless/broadcom/b43legacy/main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/b43legacy/main.c b/drivers/net/wireless/broadcom/b43legacy/main.c
index 2eaf481f03f1d..044a5fa66ae79 100644
--- a/drivers/net/wireless/broadcom/b43legacy/main.c
+++ b/drivers/net/wireless/broadcom/b43legacy/main.c

@@ -1340,8 +1340,9 @@ static void b43legacy_interrupt_tasklet(unsigned long data)
 		handle_irq_beacon(dev);
 	if (reason & B43legacy_IRQ_PMQ)
 		handle_irq_pmq(dev);
-	if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK)
+	if (reason & B43legacy_IRQ_TXFIFO_FLUSH_OK) {
 		;/*TODO*/
+	}
 	if (reason & B43legacy_IRQ_NOISESAMPLE_OK)
 		handle_irq_noise(dev);
 

-- 
2.25.1