make it compile again

SVN-Revision: 4127

diff --git a/src/object/pushbutton.cpp b/src/object/pushbutton.cpp
index 89ccb0e..45012f3 100644 (file)
--- a/src/object/pushbutton.cpp
+++ b/src/object/pushbutton.cpp
@@ -44,7 +44,7 @@ PushButton::PushButton(const lisp::Lisp& lisp)
 }
 
 void
-PushButton::update(float elapsed_time)
+PushButton::update(float /*elapsed_time*/)
 {
 }