staging: rtl8723bs: Fix indenting warning in os_dep/xmit_linux.c

Smatch issues the warning

  CHECK   drivers/staging/rtl8723bs/os_dep/xmit_linux.c
drivers/staging/rtl8723bs/os_dep/xmit_linux.c:42 _rtw_pktfile_read() warn: inconsistent indenting

A simple indent changes fixes this.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/os_dep/xmit_linux.c

@@ -39,7 +39,7 @@ uint _rtw_pktfile_read (struct pkt_file *pfile, u8 *rmem, uint rlen)
 	len =  rtw_remainder_len(pfile);
 	len = (rlen > len)? len: rlen;
 
-       if (rmem)
+	if (rmem)
 		skb_copy_bits(pfile->pkt, pfile->buf_len-pfile->pkt_len, rmem, len);
 
 	pfile->cur_addr += len;