widgets/terminal: Reap more zombies

The editor and pager were not properly being reaped, causing resource
leakage whenever a user replies to a message.

Signed-off-by: Kevin Kuehler <keur@xcf.berkeley.edu>

widgets/terminal.go

@@ -180,6 +180,7 @@ func (term *Terminal) Close(err error) {
 	}
 	if term.cmd != nil && term.cmd.Process != nil {
 		term.cmd.Process.Kill()
+		term.cmd.Wait()
 		term.cmd = nil
 	}
 	if !term.closed && term.OnClose != nil {