This was broken by 8ae063bb1b. Fixes #224.
8ae063bb1b
@ -799,7 +799,7 @@ static void processEvent(XEvent *event)
reply.xclient.data.l[3] = 0;
reply.xclient.data.l[4] = _glfw.x11.XdndActionCopy;
XSendEvent(_glfw.x11.display, window->x11.handle,
XSendEvent(_glfw.x11.display, event->xclient.data.l[0],
False, NoEventMask, &reply);
XFlush(_glfw.x11.display);
}