crypto: algif_aead - delete duplicated word

Drop the doubled word "is".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/algif_aead.c

@@ -120,7 +120,7 @@ static int _aead_recvmsg(struct socket *sock, struct msghdr *msg,
 
 	/*
 	 * Make sure sufficient data is present -- note, the same check is
-	 * is also present in sendmsg/sendpage. The checks in sendpage/sendmsg
+	 * also present in sendmsg/sendpage. The checks in sendpage/sendmsg
 	 * shall provide an information to the data sender that something is
 	 * wrong, but they are irrelevant to maintain the kernel integrity.
 	 * We need this check here too in case user space decides to not honor