staging: r8188eu: Fixed two brace coding style issues

Removed two pairs of unnecessary curly braces as per checkpatch.pl

Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Signed-off-by: Chang Yu <marcus.yu.56@gmail.com>
Link: https://lore.kernel.org/r/f08a494f324cf5a3b5ed73aab6b3a432cb1da67b.1655872968.git.marcus.yu.56@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_recv.c

@@ -1365,13 +1365,12 @@ static int amsdu_to_msdu(struct adapter *padapter, struct recv_frame *prframe)
 		a_len -= nSubframe_Length;
 		if (a_len != 0) {
 			padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4 - 1));
-			if (padding_len == 4) {
+			if (padding_len == 4)
 				padding_len = 0;
-			}
 
-			if (a_len < padding_len) {
+			if (a_len < padding_len)
 				goto exit;
-			}
+
 			pdata += padding_len;
 			a_len -= padding_len;
 		}