Don't special-case a zero-sized compression.

zlib actually writes a header for that case, and while ignoring that
header will get us the right data, it will also end up messing up our
stream position.  So we actually want zlib to "uncompress" even an empty
object.

diff --git a/unpack-objects.c b/unpack-objects.c
index 97d2681..6383db9 100644 (file)
--- a/unpack-objects.c
+++ b/unpack-objects.c
@@ -55,8 +55,6 @@ static void *get_data(unsigned long size)
        z_stream stream;
        void *buf = xmalloc(size);
 
-       if (!size)
-               return buf;
        memset(&stream, 0, sizeof(stream));
 
        stream.next_out = buf;