fixing a bug in gwt writer function
fixing a bug in gwt writer function

ljwolf/pysal,lixun910/pysal,ljwolf/pysal_core,nathania/pysal,TaylorOshan/pysal,darribas/pysal,chhao91/pysal,dfolch/pysal,hasecbinusr/pysal,lanselin/pysal,nathania/pysal,pastephens/pysal,pastephens/pysal,hasecbinusr/pysal,ljwolf/pysal_core,jlaura/pysal,ljwolf/pysal_core,darribas/pysal,ljwolf/pysal,weikang9009/pysal,badjr/pysal,sjsrey/pysal_core,hasecbinusr/pysal,TaylorOshan/pysal,spreg-git/pysal,chhao91/pysal,badjr/pysal,lixun910/pysal,pastephens/pysal,spreg-git/pysal,ljwolf/pysal,sjsrey/pysal_core,lixun910/pysal,sjsrey/pysal,jlaura/pysal,pysal/pysal,sjsrey/pysal_core,dfolch/pysal,schmidtc/pysal,TaylorOshan/pysal,schmidtc/pysal,jlaura/pysal,pedrovma/pysal