Make |EVP_CIPHER_CTX_reset| return one.

(It does upstream.)

Change-Id: I0c00e393b32a7ed237abba682b45d81889cf9fa8
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/37245
Commit-Queue: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: David Benjamin <davidben@google.com>

crypto/fipsmodule/cipher/cipher.c

diff --git a/crypto/fipsmodule/cipher/cipher.c b/crypto/fipsmodule/cipher/cipher.c
index 39e038b..7c6fa8e 100644
--- a/crypto/fipsmodule/cipher/cipher.c
+++ b/crypto/fipsmodule/cipher/cipher.c
@@ -125,9 +125,10 @@
   return 1;
 }
 
-void EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx) {
+int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx) {
   EVP_CIPHER_CTX_cleanup(ctx);
   EVP_CIPHER_CTX_init(ctx);
+  return 1;
 }
 
 int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,

include/openssl/cipher.h

diff --git a/include/openssl/cipher.h b/include/openssl/cipher.h
index ea7a940..17b7b91 100644
--- a/include/openssl/cipher.h
+++ b/include/openssl/cipher.h
@@ -136,8 +136,8 @@
                                        const EVP_CIPHER_CTX *in);
 
 // EVP_CIPHER_CTX_reset calls |EVP_CIPHER_CTX_cleanup| followed by
-// |EVP_CIPHER_CTX_init|.
-OPENSSL_EXPORT void EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx);
+// |EVP_CIPHER_CTX_init| and returns one.
+OPENSSL_EXPORT int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx);
 
 
 // Cipher context configuration.