Move some initialization code to member initializers
Move some initialization code to member initializers

rimms/jubatus_core,gintenlabo/jubatus,kmaehashi/jubatus_core,roselleebarle04/jubatus,gintenlabo/jubatus_core,jubatus/jubatus,mathn/jubatus,kmaehashi/jubatus,kmaehashi/jubatus,kumagi/jubatus_core,kumagi/jubatus_core,rimms/jubatus_core,gintenlabo/jubatus_core,rimms/jubatus_core,kumagi/jubatus_core,jubatus/jubatus,Asuka52/jubatus,mathn/jubatus,kmaehashi/jubatus_core,gintenlabo/jubatus,roselleebarle04/jubatus,kmaehashi/jubatus_core,gintenlabo/jubatus_core,rimms/jubatus,kmaehashi/jubatus_core,elkingtonmcb/jubatus,Asuka52/jubatus,jubatus/jubatus,elkingtonmcb/jubatus,rimms/jubatus,kumagi/jubatus_core,rimms/jubatus_core,gintenlabo/jubatus_core