Fix missing definition of buffered and buffer_change
Fix missing definition of buffered and buffer_change

jbfavre/exaproxy,jbfavre/exaproxy,david-farrar/exaproxy,PrFalken/exaproxy,PrFalken/exaproxy,PrFalken/exaproxy,david-farrar/exaproxy,david-farrar/exaproxy