master 3285901e9a: Fix timestamps recorded in Motif DND top level leave messages

[Po Lu]

branch: master
commit 3285901e9a87f083bf88ac732a3ed2eae6488fec
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Fix timestamps recorded in Motif DND top level leave messages
    
    * src/xterm.c (xm_send_top_level_leave_message): Use X_SHRT_MAX
    since Motif treats x and y as signed.
    (handle_one_xevent): Use correct time for lmsg.timestamp sent in
    response to entering the return-frame.
---
 src/xterm.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/xterm.c b/src/xterm.c
index 885344229a..f9f3e938e0 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -2454,8 +2454,13 @@ xm_send_top_level_leave_message (struct x_display_info 
*dpyinfo, Window source,
                                               XM_DROP_SITE_NONE, 
x_dnd_motif_operations,
                                               XM_DROP_ACTION_DROP_CANCEL);
       mmsg.timestamp = dmsg->timestamp;
-      mmsg.x = 65535;
-      mmsg.y = 65535;
+
+      /* Use X_SHRT_MAX instead of the max value of uint16_t since
+        that will be interpreted as a plausible position by Motif,
+        and as such breaks if the drop target is beneath that
+        position.  */
+      mmsg.x = X_SHRT_MAX;
+      mmsg.y = X_SHRT_MAX;
 
       xm_send_drag_motion_message (dpyinfo, source, target, &mmsg);
     }
@@ -19757,7 +19762,7 @@ handle_one_xevent (struct x_display_info *dpyinfo,
                                                            
XM_DRAG_REASON_TOP_LEVEL_LEAVE);
                              lmsg.byteorder = XM_BYTE_ORDER_CUR_FIRST;
                              lmsg.zero = 0;
-                             lmsg.timestamp = event->xmotion.time;
+                             lmsg.timestamp = xev->time;
                              lmsg.source_window = FRAME_X_WINDOW (x_dnd_frame);
 
                              if (x_dnd_motif_setup_p)