Fixed a bug of async invoke
Fixed a bug of async invoke

remicollet/hprose-pecl,hprose/hprose-pecl,hprose/hprose-pecl,remicollet/hprose-pecl,remicollet/hprose-pecl,remicollet/hprose-pecl,remicollet/hprose-pecl,hprose/hprose-pecl,hprose/hprose-pecl,hprose/hprose-pecl