Bluetooth: btmrvl: trivial style fixes

Patch shortens locals scope and adds missing braces. This is a diff
between v1 which was applied and v2 of patch "Bluetooth: btmrvl: Do
not send vendor events to bluetooth stack".

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index cf7588ed..6a9e971 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -568,8 +568,9 @@
 		if (type == HCI_EVENT_PKT) {
 			if (btmrvl_check_evtpkt(priv, skb))
 				hci_recv_frame(skb);
-		} else
+		} else {
 			hci_recv_frame(skb);
+		}
 
 		hdev->stat.byte_rx += buf_len;
 		break;