Add dummy variables to keep wpa_supplicant happy.

Since we can't update wpa_supplicant nearly as fast as we would like, we
need to try and keep it happy. Unfortunately, the recent switch to
EVP_AEAD breaks it so this dismal change adds some dummy variables that
will allow it to compile.

Change-Id: I03d6b81c30bbebc07af3af0d6cda85a26b461edf
Reviewed-on: https://boringssl-review.googlesource.com/2960
Reviewed-by: Adam Langley <agl@google.com>

include/openssl/ssl.h

@@ -1377,6 +1377,12 @@ struct ssl_st
 	 * bytes. This ensures that the cellular radio is fast forwarded to DCH
 	 * (high data rate) state in 3G networks. */
 	 char fastradio_padding;
+
+	/* These fields are always NULL and exist only to keep wpa_supplicant
+	 * happy about the change to EVP_AEAD. They are only needed for
+	 * EAP-FAST, which we don't support. */
+	EVP_CIPHER_CTX *enc_read_ctx;
+	EVP_MD_CTX *read_hash;
 	};
 
 #endif

include/openssl/ssl3.h

@@ -502,6 +502,11 @@ typedef struct ssl3_state_st
 		/* Client-only: peer_psk_identity_hint is the psk_identity_hint
 		 * sent by the server when using a PSK key exchange. */
 		char *peer_psk_identity_hint;
+
+		/* new_mac_secret_size is unused and exists only until
+		 * wpa_supplicant can be updated. It is only needed for
+		 * EAP-FAST, which we don't support. */
+		uint8_t new_mac_secret_size;
 		} tmp;
 
         /* Connection binding to prevent renegotiation attacks */