From 1c2527eca365f3a65ca6a59a456f387c54c4e27f Mon Sep 17 00:00:00 2001
From: Shay Rojansky <roji@roji.org>
Date: Thu, 24 Oct 2019 15:15:47 +0200
Subject: [PATCH] Exit Dispose early if reader is already disposed

Otherwise calling Close followed by Dispose generates an exception
internally, bad for perf and for the debugging experience.

Fixes #18307
---
 src/Microsoft.Data.Sqlite.Core/SqliteDataReader.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Microsoft.Data.Sqlite.Core/SqliteDataReader.cs b/src/Microsoft.Data.Sqlite.Core/SqliteDataReader.cs
index ba4ebd90476..62c7e40c5e4 100644
--- a/src/Microsoft.Data.Sqlite.Core/SqliteDataReader.cs
+++ b/src/Microsoft.Data.Sqlite.Core/SqliteDataReader.cs
@@ -227,7 +227,7 @@ public override void Close()
         /// </param>
         protected override void Dispose(bool disposing)
         {
-            if (!disposing)
+            if (!disposing || _closed)
             {
                 return;
             }