[pygobject/benzea/gio-asyncio] finalize GSource via box clearing

[Benjamin Berg <bberg src gnome org>]

commit 92af016bf8da3f8ea96fcf38b4f55694b3c1d5a7
Author: Benjamin Berg <bberg redhat com>
Date:   Thu Oct 28 10:46:50 2021 +0200

    finalize GSource via box clearing

 gi/events.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gi/events.py b/gi/events.py
index 11a58f51..51e91388 100644
--- a/gi/events.py
+++ b/gi/events.py
@@ -145,6 +145,7 @@ class EventLoop(asyncio.SelectorEventLoop):
             source.set_callback(self._signal_cb, sig)
 
             self.__signal_handlers[sig] = (source, callback, args)
+            del source
 
         def remove_signal_handler(self, sig):
             if sig not in { signal.SIGHUP, signal.SIGINT, signal.SIGTERM, signal.SIGUSR1, signal.SIGUSR2, 
signal.SIGWINCH }:
@@ -152,11 +153,10 @@ class EventLoop(asyncio.SelectorEventLoop):
 
             try:
                 source, _, _ = self.__signal_handlers[sig]
-                source.destroy()
-                # Make sure the GSource is finalized
-                source.set_callback(None)
-                del source
                 del self.__signal_handlers[sig]
+                # Really unref the underlying GSource so that GLib resets the signal handler
+                source.destroy()
+                source._clear_boxed()
 
                 # GLib does not restore the original signal handler.
                 # Try to restore the python handler for SIGINT, this makes