pongc now exits correctly.

tests/pongc.cr

@@ -58,6 +58,8 @@ def main
 		exit 1
 	end
 
+	nb_messages_remaining = CLI.rounds
+
 	# Listening on STDIN.
 	client << 0
 
@@ -87,7 +89,11 @@ def main
 				client.send message
 			end
 		when IPC::Event::MessageReceived
-			info "new message from #{event.fd}: #{event.message.to_s}"
+			nb_messages_remaining -= 1
+			info "new message from #{event.fd}: #{event.message.to_s}, remaining #{nb_messages_remaining}"
+			if nb_messages_remaining == 0
+				exit 0
+			end
 		when IPC::Event::Disconnection
 			info "Disconnection from #{event.fd}"
 			if event.fd == 0