staging: rtl8723au: hal: Fix missing blank line warning.

This patch fixes "Missing a blank line after declarations" checkpatch.pl
warning in hal_com.c
Signed-off-by: NAybuke Ozdemir <aybuke.147@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/hal/hal_com.c

@@ -535,6 +535,7 @@ void rtl8723a_set_bcn_func(struct rtw_adapter *padapter, u8 val)
 void rtl8723a_check_bssid(struct rtw_adapter *padapter, u8 val)
 {
 	u32 val32;
+
 	val32 = rtl8723au_read32(padapter, REG_RCR);
 	if (val)
 		val32 |= RCR_CBSSID_DATA | RCR_CBSSID_BCN;