lib/signals: use `do end` in empty methods of signals

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/signals.nit b/lib/signals.nit
index 91015da..cb69dd7 100644 (file)
--- a/lib/signals.nit
+++ b/lib/signals.nit
@@ -69,8 +69,7 @@ interface SignalHandler
        #     r.handle_signal(sigint, true) # will call back when "check_signals" is called
        #     # ...
        #     check_signals # if a signal was received, it will invoke `r.receive_signal`
-       fun receive_signal(signal: Int) `{
-       `}
+       fun receive_signal(signal: Int) do end
 
        # Called immediatly on receiving an unsafe signal (should be redefed by subclasses)
        #
@@ -88,8 +87,7 @@ interface SignalHandler
        #     
        #     var r = new MyReceiver
        #     r.handle_signal(sigsegv, false) # `r.receive_signal_unsafe` will be invoked on sigsegv
-       fun receive_signal_unsafe(signal: Int) `{
-       `}
+       fun receive_signal_unsafe(signal: Int) do end
 
        # Set the receiver as the handler of the signal
        #