Adding comment and Fixing code For Issue # 7031
Adding comment and Fixing code For Issue # 7031

Updated code for Issue # 7031 Invalid configuration throws exception
 if the instance of new type is not created 
 Possible reasons : Default constructor is not defined or not accessible
 Workaround : Guarding the method with try catch block. And creating default
 Instance of logger.
MoaidHathot/NLog,fringebits/NLog,RRUZ/NLog,304NotModified/NLog,czema/NLog,blair55/NLog,blair55/NLog,AqlaSolutions/NLog-Unity3D,mikkelxn/NLog,ArsenShnurkov/NLog,bjornbouetsmith/NLog,zbrad/NLog,MartinTherriault/NLog,ajayanandgit/NLog,thomkinson/NLog,MartinTherriault/NLog,michaeljbaird/NLog,czema/NLog,littlesmilelove/NLog,FeodorFitsner/NLog,rajk987/NLog,BrandonLegault/NLog,breyed/NLog,nazim9214/NLog,matteobruni/NLog,mikkelxn/NLog,rajeshgande/NLog,thomkinson/NLog,ie-zero/NLog,bryjamus/NLog,BrandonLegault/NLog,tetrodoxin/NLog,UgurAldanmaz/NLog,breyed/NLog,nazim9214/NLog,vladikk/NLog,rajeshgande/NLog,RichiCoder1/NLog,NLog/NLog,bhaeussermann/NLog,AqlaSolutions/NLog-Unity3D,michaeljbaird/NLog,blair55/NLog,RichiCoder1/NLog,ajayanandgit/NLog,Niklas-Peter/NLog,hubo0831/NLog,vladikk/NLog,babymechanic/NLog,blair55/NLog,AqlaSolutions/NLog-Unity3D,bjornbouetsmith/NLog,babymechanic/NLog,thomkinson/NLog,RRUZ/NLog,kevindaub/NLog,vladikk/NLog,tmusico/NLog,tetrodoxin/NLog,luigiberrettini/NLog,Niklas-Peter/NLog,AndreGleichner/NLog,AqlaSolutions/NLog-Unity3D,pwelter34/NLog,MoaidHathot/NLog,czema/NLog,campbeb/NLog,bhaeussermann/NLog,BrutalCode/NLog,mikkelxn/NLog,pwelter34/NLog,tmusico/NLog,FeodorFitsner/NLog,BrandonLegault/NLog,blair55/NLog,hubo0831/NLog,littlesmilelove/NLog,tohosnet/NLog,vbfox/NLog,AndreGleichner/NLog,fringebits/NLog,snakefoot/NLog,rajk987/NLog,bryjamus/NLog,vbfox/NLog,mikkelxn/NLog,czema/NLog,UgurAldanmaz/NLog,ilya-g/NLog,ie-zero/NLog,thomkinson/NLog,BrutalCode/NLog,sean-gilliam/NLog,tohosnet/NLog,campbeb/NLog,rajk987/NLog,kevindaub/NLog,zbrad/NLog,BrandonLegault/NLog,rajk987/NLog,luigiberrettini/NLog,ArsenShnurkov/NLog,ilya-g/NLog,fringebits/NLog,blair55/NLog,vladikk/NLog,fringebits/NLog,matteobruni/NLog