SofaModulePostProcessorShareManager should detect null parameter

[caojie09]

SofaModulePostProcessorShareManager should detect null parameter

Caused by: java.lang.NullPointerException
  at com.alipay.sofa.isle.spring.share.SofaModulePostProcessorShareManager.unableToShare(SofaModulePostProcessorShareManager.java:48)