Rearrange some code to improve clarity

In particular, the test for z-stream input completion
(zs.avail_in != 0) logically belongs with the test for
the Z_STREAM_END stream status. This is also consistent
with the identical check in finish_inflate().

Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>

src/odb.c

@@ -390,10 +390,10 @@ static int inflate_buffer(void *in, size_t inlen, void *out, size_t outlen)
 
 	inflateEnd(&zs);
 
-	if ((status != Z_STREAM_END) || (zs.total_out != outlen))
+	if ((status != Z_STREAM_END) || (zs.avail_in != 0))
 		return GIT_ERROR;
 
-	if (zs.avail_in != 0)
+	if (zs.total_out != outlen)
 		return GIT_ERROR;
 
 	return GIT_SUCCESS;