Add error handling to GetIndicesPointingToAlias. /wrongname/_aliases used to return an empty array (e.g. in ES 0.20) for a non-existing alias, but in more recent ES versions (0.90) it returns {"error":"IndexMissingException[[wrongname] missing]","status":404} So we need to add explicit error handling here, otherwise GetIndicesPointingToAlias returns two "indices" called "error" and "status".
Add error handling to GetIndicesPointingToAlias. /wrongname/_aliases used to return an empty array
(e.g. in ES 0.20) for a non-existing alias, but in more recent ES versions (0.90) it returns
{"error":"IndexMissingException[[wrongname] missing]","status":404}
So we need to add explicit error handling here, otherwise GetIndicesPointingToAlias returns two
"indices" called "error" and "status".

starckgates/elasticsearch-net,alanprot/elasticsearch-net,tkirill/elasticsearch-net,mac2000/elasticsearch-net,KodrAus/elasticsearch-net,robrich/elasticsearch-net,joehmchan/elasticsearch-net,gayancc/elasticsearch-net,LeoYao/elasticsearch-net,adam-mccoy/elasticsearch-net,cstlaurent/elasticsearch-net,mac2000/elasticsearch-net,robertlyson/elasticsearch-net,SeanKilleen/elasticsearch-net,cstlaurent/elasticsearch-net,DavidSSL/elasticsearch-net,NickCraver/NEST,CSGOpenSource/elasticsearch-net,gayancc/elasticsearch-net,faisal00813/elasticsearch-net,robrich/elasticsearch-net,NickCraver/NEST,tkirill/elasticsearch-net,elastic/elasticsearch-net,mac2000/elasticsearch-net,starckgates/elasticsearch-net,junlapong/elasticsearch-net,LeoYao/elasticsearch-net,SeanKilleen/elasticsearch-net,azubanov/elasticsearch-net,robertlyson/elasticsearch-net,wawrzyn/elasticsearch-net,ststeiger/elasticsearch-net,gayancc/elasticsearch-net,jonyadamit/elasticsearch-net,joehmchan/elasticsearch-net,starckgates/elasticsearch-net,geofeedia/elasticsearch-net,UdiBen/elasticsearch-net,jonyadamit/elasticsearch-net,ststeiger/elasticsearch-net,alanprot/elasticsearch-net,amyzheng424/elasticsearch-net,SeanKilleen/elasticsearch-net,tkirill/elasticsearch-net,azubanov/elasticsearch-net,RossLieberman/NEST,abibell/elasticsearch-net,CSGOpenSource/elasticsearch-net,TheFireCookie/elasticsearch-net,alanprot/elasticsearch-net,geofeedia/elasticsearch-net,Grastveit/NEST,NickCraver/NEST,wawrzyn/elasticsearch-net,joehmchan/elasticsearch-net,LeoYao/elasticsearch-net,robertlyson/elasticsearch-net,jonyadamit/elasticsearch-net,Grastveit/NEST,TheFireCookie/elasticsearch-net,alanprot/elasticsearch-net,junlapong/elasticsearch-net,KodrAus/elasticsearch-net,ststeiger/elasticsearch-net,geofeedia/elasticsearch-net,RossLieberman/NEST,wawrzyn/elasticsearch-net,elastic/elasticsearch-net,abibell/elasticsearch-net,UdiBen/elasticsearch-net,abibell/elasticsearch-net,KodrAus/elasticsearch-net,faisal00813/elasticsearch-net,adam-mccoy/elasticsearch-net,CSGOpenSource/elasticsearch-net,cstlaurent/elasticsearch-net,amyzheng424/elasticsearch-net,faisal00813/elasticsearch-net,robrich/elasticsearch-net,UdiBen/elasticsearch-net,azubanov/elasticsearch-net,TheFireCookie/elasticsearch-net,DavidSSL/elasticsearch-net,DavidSSL/elasticsearch-net,adam-mccoy/elasticsearch-net,junlapong/elasticsearch-net,amyzheng424/elasticsearch-net,Grastveit/NEST,RossLieberman/NEST