suppress new warnings introduced by merge

Author: mus65

src/Renci.SshNet/Common/SftpException.cs

@@ -11,7 +11,9 @@ namespace Renci.SshNet.Common
 #if NETFRAMEWORK
     [Serializable]
 #endif
+#pragma warning disable CA1032 // Implement standard exception constructors
     public class SftpException : SshException
+#pragma warning restore CA1032 // Implement standard exception constructors
     {
         /// <summary>
         /// Gets the status code that is associated with this exception.

src/Renci.SshNet/Sftp/SftpFileStream.cs

@@ -164,7 +164,9 @@ internal static SftpFileStream Open(
             int bufferSize,
             bool isDownloadFile = false)
         {
+#pragma warning disable CA2000 // Dispose objects before losing scope
             return Open(session, path, mode, access, bufferSize, isDownloadFile, isAsync: false, CancellationToken.None).GetAwaiter().GetResult();
+#pragma warning restore CA2000 // Dispose objects before losing scope
         }
 
         internal static Task<SftpFileStream> OpenAsync(

src/Renci.SshNet/SftpClient.cs

@@ -2335,13 +2335,15 @@ private async Task InternalDownloadFile(
                         break;
                     }
 
+#pragma warning disable CA1849 // Call async methods when in an async method
                     var bytesRead = isAsync
 #if NET
                         ? await sftpStream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false)
 #else
                         ? await sftpStream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false)
 #endif
                         : sftpStream.Read(buffer, 0, buffer.Length);
+#pragma warning restore CA1849 // Call async methods when in an async method
 
                     if (bytesRead == 0)
                     {
@@ -2358,7 +2360,9 @@ private async Task InternalDownloadFile(
                     }
                     else
                     {
+#pragma warning disable CA1849 // Call async methods when in an async method
                         output.Write(buffer, 0, bytesRead);
+#pragma warning restore CA1849 // Call async methods when in an async method
                     }
 
                     totalBytesRead += (ulong)bytesRead;
@@ -2385,7 +2389,9 @@ private async Task InternalDownloadFile(
                 }
                 else
                 {
+#pragma warning disable CA1849 // Call async methods when in an async method
                     sftpStream.Dispose();
+#pragma warning restore CA1849 // Call async methods when in an async method
                 }
             }
         }