From 2886feab4a68becc68280442ce99225110a5cb75 Mon Sep 17 00:00:00 2001
From: Zlatin Balevsky <zlatinb@gmail.com>
Date: Sun, 23 Jun 2019 17:08:07 +0100
Subject: [PATCH] do not modify the set of available pieces

---
 .../main/groovy/com/muwire/core/download/DownloadSession.groovy | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/groovy/com/muwire/core/download/DownloadSession.groovy b/core/src/main/groovy/com/muwire/core/download/DownloadSession.groovy
index 71bb9f81..f6ee096d 100644
--- a/core/src/main/groovy/com/muwire/core/download/DownloadSession.groovy
+++ b/core/src/main/groovy/com/muwire/core/download/DownloadSession.groovy
@@ -75,7 +75,7 @@ class DownloadSession {
         if (available.isEmpty())
             piece = pieces.claim()
         else
-            piece = pieces.claim(available)
+            piece = pieces.claim(new HashSet<>(available))
         if (piece == -1)
             return false
         boolean unclaim = true