added check for NPE
added check for NPE

danberindei/JGroups,rpelisse/JGroups,danberindei/JGroups,TarantulaTechnology/JGroups,pruivo/JGroups,slaskawi/JGroups,rhusar/JGroups,pruivo/JGroups,rpelisse/JGroups,belaban/JGroups,dimbleby/JGroups,ligzy/JGroups,slaskawi/JGroups,Sanne/JGroups,ligzy/JGroups,pferraro/JGroups,vjuranek/JGroups,kedzie/JGroups,dimbleby/JGroups,rhusar/JGroups,deepnarsay/JGroups,pferraro/JGroups,Sanne/JGroups,ibrahimshbat/JGroups,rvansa/JGroups,rpelisse/JGroups,Sanne/JGroups,kedzie/JGroups,ibrahimshbat/JGroups,ibrahimshbat/JGroups,rvansa/JGroups,deepnarsay/JGroups,tristantarrant/JGroups,vjuranek/JGroups,kedzie/JGroups,TarantulaTechnology/JGroups,vjuranek/JGroups,belaban/JGroups,ibrahimshbat/JGroups,TarantulaTechnology/JGroups,deepnarsay/JGroups,belaban/JGroups,ligzy/JGroups,dimbleby/JGroups,pruivo/JGroups,tristantarrant/JGroups,pferraro/JGroups,danberindei/JGroups,slaskawi/JGroups,rhusar/JGroups