From 54b1c596435b0aaf3a2557652ad4bf74d5756514 Mon Sep 17 00:00:00 2001
From: Will Dietz <w@wdtz.org>
Date: Fri, 1 Jun 2018 10:53:28 -0500
Subject: [PATCH] download.cc: fix readCallback return type (int -> size_t)

I'm not sure if curl ever asks for enough data at once
for truncation to occur but better safe than sorry.
---
 src/libstore/download.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libstore/download.cc b/src/libstore/download.cc
index 0b768b591..48d9a42e5 100644
--- a/src/libstore/download.cc
+++ b/src/libstore/download.cc
@@ -213,7 +213,7 @@ struct CurlDownloader : public Downloader
         }
 
         size_t readOffset = 0;
-        int readCallback(char *buffer, size_t size, size_t nitems)
+        size_t readCallback(char *buffer, size_t size, size_t nitems)
         {
             if (readOffset == request.data->length())
                 return 0;
@@ -224,7 +224,7 @@ struct CurlDownloader : public Downloader
             return count;
         }
 
-        static int readCallbackWrapper(char *buffer, size_t size, size_t nitems, void * userp)
+        static size_t readCallbackWrapper(char *buffer, size_t size, size_t nitems, void * userp)
         {
             return ((DownloadItem *) userp)->readCallback(buffer, size, nitems);
         }