Documentation: fix diff.external example

diff --git a/builtin-unpack-objects.c b/builtin-unpack-objects.c
index 85043d1fde917e67746fb1ee106ce2cf78f3d161..a8918666655bb91f952ccdac18715bd9ba4a09f2 100644 (file)
--- a/builtin-unpack-objects.c
+++ b/builtin-unpack-objects.c
@@ -471,7 +471,8 @@ static void unpack_all(void)
        if (ntohl(hdr->hdr_signature) != PACK_SIGNATURE)
                die("bad pack file");
        if (!pack_version_ok(hdr->hdr_version))
-               die("unknown pack file version %d", ntohl(hdr->hdr_version));
+               die("unknown pack file version %"PRIu32,
+                       ntohl(hdr->hdr_version));
        use(sizeof(struct pack_header));
 
        if (!quiet)