[gtk/wip/carlosg/fix-issue-1] wayland: Improve EOF detection when reading selections

[Carlos Garnacho <carlosg src gnome org>]

commit 08f60dbcf6eae0549eb7d3715582f46361a02800
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Feb 7 18:30:18 2018 +0100

    wayland: Improve EOF detection when reading selections
    
    g_input_stream_read_bytes() roughly provides the same guarantees
    than g_input_stream_read() wrt the number of bytes being possibly
    read (i.e. it being a best effort, but no real guarantees).
    
    Instead, rely on the 0-len read that we'd get at the end of the
    transfer.
    
    Fixes clipboard/DnD transfers possibly being cut short, resulting
    on "Broken pipe" errors on the other side.
    
    https://gitlab.gnome.org/GNOME/gtk/issues/1
    
    Closes: #1

 gdk/wayland/gdkselection-wayland.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gdk/wayland/gdkselection-wayland.c b/gdk/wayland/gdkselection-wayland.c
index 008778292a..12737d672e 100644
--- a/gdk/wayland/gdkselection-wayland.c
+++ b/gdk/wayland/gdkselection-wayland.c
@@ -245,7 +245,7 @@ selection_buffer_read_cb (GObject      *object,
 
   if (bytes)
     {
-      finished = g_bytes_get_size (bytes) < get_buffer_size ();
+      finished = g_bytes_get_size (bytes) == 0;
       selection_buffer_append_data (buffer,
                                     g_bytes_get_data (bytes, NULL),
                                     g_bytes_get_size (bytes));