master 993e8b010c: Don't pass invalid keyboard modifiers to the event loop on Haiku

[Po Lu]

branch: master
commit 993e8b010c98d017d74a7ba22c9fb9549a6d5d75
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Don't pass invalid keyboard modifiers to the event loop on Haiku
    
    * src/haikuterm.c (haiku_read_socket): Ensure validity of extra
    keyboard modifiers.
---
 src/haikuterm.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/haikuterm.c b/src/haikuterm.c
index b5b61ec85f..c184501a20 100644
--- a/src/haikuterm.c
+++ b/src/haikuterm.c
@@ -2703,7 +2703,13 @@ haiku_read_socket (struct terminal *terminal, struct 
input_event *hold_quit)
 
            inev.timestamp = b->time / 1000;
            inev.modifiers = (haiku_modifiers_to_emacs (b->modifiers)
-                             | extra_keyboard_modifiers);
+                             | (extra_keyboard_modifiers
+                                & (meta_modifier
+                                   | hyper_modifier
+                                   | ctrl_modifier
+                                   | alt_modifier
+                                   | shift_modifier)));
+
            XSETFRAME (inev.frame_or_window, f);
            break;
          }