Staging:rtl8723bs:Add blank line after declaration

missing a blank line after declaration checkpatch warnings.
Issue found by checkpatch.pl

Signed-off-by: Paul McQuade <paulmcquad@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723bs/os_dep/recv_linux.c

@@ -43,6 +43,7 @@ void rtw_os_recv_resource_free(struct recv_priv *precvpriv)
 {
 	sint i;
 	union recv_frame *precvframe;
+
 	precvframe = (union recv_frame*) precvpriv->precv_frame_buf;
 
 	for (i = 0; i < NR_RECVFRAME; i++)