bcrypt: Factor-out bcrypt_ctx_reset() function.

* subversion/libsvn_subr/checksum_bcrypt.c
  (bcrypt_ctx_reset): New method.
  (svn_checksum__md5_ctx_reset,
   svn_checksum__sha1_ctx_reset): Use bcrypt_ctx_reset()

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1931081 13f79535-47bb-0310-9956-ffa450edef68

Author: rinrab

subversion/libsvn_subr/checksum_bcrypt.c

@@ -151,6 +151,16 @@ bcrypt_ctx_final(algorithm_state_t *algorithm,
   return SVN_NO_ERROR;
 }
 
+static svn_error_t *
+bcrypt_ctx_reset(algorithm_state_t *algorithm,
+                 bcrypt_ctx_t *ctx)
+{
+  bcrypt_ctx_cleanup(ctx);
+  SVN_ERR(bcrypt_ctx_init(ctx, algorithm));
+
+  return SVN_NO_ERROR;
+}
+
 static svn_error_t *
 bcrypt_checksum(algorithm_state_t *algorithm,
                 unsigned char *digest,
@@ -207,10 +217,7 @@ svn_checksum__md5_ctx_create(apr_pool_t *pool)
 svn_error_t *
 svn_checksum__md5_ctx_reset(svn_checksum__md5_ctx_t *ctx)
 {
-  bcrypt_ctx_cleanup(&ctx->bcrypt_ctx);
-  SVN_ERR(bcrypt_ctx_init(&ctx->bcrypt_ctx, &md5));
-
-  return SVN_NO_ERROR;
+  return svn_error_trace(bcrypt_ctx_reset(&md5, &ctx->bcrypt_ctx));
 }
 
 svn_error_t *
@@ -261,10 +268,7 @@ svn_checksum__sha1_ctx_create(apr_pool_t *pool)
 svn_error_t *
 svn_checksum__sha1_ctx_reset(svn_checksum__sha1_ctx_t *ctx)
 {
-  bcrypt_ctx_cleanup(&ctx->bcrypt_ctx);
-  SVN_ERR(bcrypt_ctx_init(&ctx->bcrypt_ctx, &sha1));
-
-  return SVN_NO_ERROR;
+  return svn_error_trace(bcrypt_ctx_reset(&sha1, &ctx->bcrypt_ctx));
 }
 
 svn_error_t *