crypto: arc4 - Fixed coding style issues

Fixed coding style issues: unnecessary spaces, parentheses on wrong lines.
Signed-off-by: Mati Vait <mativait@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/arc4.c

@@ -33,16 +33,15 @@ static int arc4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
 	ctx->x = 1;
 	ctx->y = 0;
 
-	for(i = 0; i < 256; i++)
+	for (i = 0; i < 256; i++)
 		ctx->S[i] = i;
 
-	for(i = 0; i < 256; i++)
-	{
+	for (i = 0; i < 256; i++) {
 		u8 a = ctx->S[i];
 		j = (j + in_key[k] + a) & 0xff;
 		ctx->S[i] = ctx->S[j];
 		ctx->S[j] = a;
-		if(++k >= key_len)
+		if (++k >= key_len)
 			k = 0;
 	}