From 435419817b6213cd702d52777f7d8ea04f6f886d Mon Sep 17 00:00:00 2001
From: Tuomas Hietanen <thorium@iki.fi>
Date: Mon, 8 Jul 2024 13:31:14 +0100
Subject: [PATCH] null-check fix

---
 src/Giraffe.ViewEngine/StringBuilderPool.fs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Giraffe.ViewEngine/StringBuilderPool.fs b/src/Giraffe.ViewEngine/StringBuilderPool.fs
index a26c057..093cdae 100644
--- a/src/Giraffe.ViewEngine/StringBuilderPool.fs
+++ b/src/Giraffe.ViewEngine/StringBuilderPool.fs
@@ -29,7 +29,7 @@ type public StringBuilderPool =
             let lifetime = DateTimeOffset.Now - StringBuilderPool.created
             let expired  = lifetime > PoolLimits.MaximumLifetime
             let sb       = StringBuilderPool.instance
-            if not expired && sb <> null then
+            if not expired && not (isNull sb) then
                 StringBuilderPool.instance <- null
                 sb.Clear()
             else new StringBuilder(PoolLimits.MinimumCapacity)