added handling for null senders
added handling for null senders

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