From 0ee985e319b72058eb0c68a4595dfc0a15f57936 Mon Sep 17 00:00:00 2001
From: Marco Foscato <marco.foscato@uib.no>
Date: Fri, 11 Nov 2022 10:32:06 +0100
Subject: [PATCH] resolves error from unit testing on Windows

---
 src/main/java/denoptim/io/IteratingAtomContainerReader.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/denoptim/io/IteratingAtomContainerReader.java b/src/main/java/denoptim/io/IteratingAtomContainerReader.java
index 54c7bb74a..054fc46ac 100644
--- a/src/main/java/denoptim/io/IteratingAtomContainerReader.java
+++ b/src/main/java/denoptim/io/IteratingAtomContainerReader.java
@@ -76,8 +76,10 @@ public IteratingAtomContainerReader(File input)
         FormatFactory factory = new FormatFactory();
         factory.registerFormat(new SMILESListFormat());
         
-        IChemFormat chemFormat = factory.guessFormat(
-                new BufferedReader(new FileReader(input)));
+        BufferedReader headReader = new BufferedReader(new FileReader(input));
+        IChemFormat chemFormat = factory.guessFormat(headReader);
+        headReader.close();
+        
         if (chemFormat instanceof MDLV2000Format
                 || chemFormat instanceof MDLV3000Format)
         {