ffi-rzmq error checking
ffi-rzmq error checking

hainesr/iruby,Sharpie/iruby,Sharpie/iruby,jjn2009/iruby,minrk/iruby,zalt50/iruby,SciRuby/iruby,zalt50/iruby,domitry/iruby,astroboxio/iruby,Rambatino/pi-ruby,SciRuby/iruby,zalt50/iruby,jjn2009/iruby,zalt50/iruby,mijoharas/iruby,minrk/iruby,mijoharas/iruby,astroboxio/iruby,minrk/iruby,Rambatino/pi-ruby,SciRuby/iruby,SciRuby/iruby,hainesr/iruby,domitry/iruby