Fixed two bugs of HproseClient.
Fixed two bugs of HproseClient.

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