There is a push 15 lines before the push that is removed here, but the client
that is pushed there was never popped. Bad.
Fix this by letting luaA_class_emit_signal() do the needed pop for us.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Signed-off-by: Julien Danjou <julien@danjou.info>