fix kplayer crash: kplayer elements don't have nodeName
fix kplayer crash: kplayer elements don't have nodeName

slash851/mwEmbed,bordar/mwEmbed,panda-os/mwEmbed,kaltura/mwEmbed,tanyaLibatter/mwEmbed,safarijv/mwEmbed,matsuu/mwEmbed,alexmilk/mwEmbed,panda-os/mwEmbed,bordar/mwEmbed,slash851/mwEmbed,panda-os/mwEmbed,alexmilk/mwEmbed,abaylis/mwEmbed,vladm3/mwEmbed,tanyaLibatter/mwEmbed,SVSG/mwEmbed,abaylis/mwEmbed,slash851/mwEmbed,DBezemer/mwEmbed,panda-os/mwEmbed,vladm3/mwEmbed,kaltura/mwEmbed,omridevk/mwEmbed,safarijv/mwEmbed,SVSG/mwEmbed,FlixMaster/mwEmbed,abaylis/mwEmbed,FlixMaster/mwEmbed,DBezemer/mwEmbed,joanpuigsanz/mwEmbed,joanpuigsanz/mwEmbed,omridevk/mwEmbed,omridevk/mwEmbed,joanpuigsanz/mwEmbed,SVSG/mwEmbed,matsuu/mwEmbed,matsuu/mwEmbed,omridevk/mwEmbed,vladm3/mwEmbed,vladm3/mwEmbed,bordar/mwEmbed,safarijv/mwEmbed,safarijv/mwEmbed,matsuu/mwEmbed,FlixMaster/mwEmbed,DBezemer/mwEmbed,SVSG/mwEmbed,abaylis/mwEmbed,alexmilk/mwEmbed,DBezemer/mwEmbed,FlixMaster/mwEmbed,slash851/mwEmbed,joanpuigsanz/mwEmbed,alexmilk/mwEmbed,kaltura/mwEmbed,tanyaLibatter/mwEmbed,tanyaLibatter/mwEmbed,bordar/mwEmbed,kaltura/mwEmbed