connection: close_fds() should only remove fds it closed from the buffer

All current callers close all fds, so this has gone unnoticed, but if
we close less than all fds with close_fds() we leak all the unclosed
ones and ruin further event demarshalling.

A future patch will close less than the full buffer's worth of fds,
so this is now noticed.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

src/connection.c

@@ -186,6 +186,7 @@ close_fds(struct wl_buffer *buffer, int max)
 	count = size / sizeof fds[0];
 	if (max > 0 && max < count)
 		count = max;
+	size = count * sizeof fds[0];
 	for (i = 0; i < count; i++)
 		close(fds[i]);
 	buffer->tail += size;