Forward SIGWINCH to previous handler (#29)

Author: blueyed

pyrepl/unix_console.py

@@ -401,6 +401,7 @@ def restore(self):
     def __sigwinch(self, signum, frame):
         self.height, self.width = self.getheightwidth()
         self.event_queue.insert(Event('resize', None))
+        self.old_sigwinch(signum, frame)
 
     def push_char(self, char):
         trace('push char {char!r}', char=char)