Fix for #365
Fix for #365

Parsing a [null] parameter in for example logger.Info("Testing null:
{0}", null); will result in not logging an event. A
System.NullReferenceException would be thrown causing the entire
logEvent  NOT to be logged. This behavior is different from prior
versions. This fix will restore the previous behavior.

BrandonLegault/NLog,ie-zero/NLog,MartinTherriault/NLog,Niklas-Peter/NLog,RichiCoder1/NLog,tetrodoxin/NLog,AqlaSolutions/NLog-Unity3D,RRUZ/NLog,campbeb/NLog,thomkinson/NLog,rajk987/NLog,littlesmilelove/NLog,BrutalCode/NLog,michaeljbaird/NLog,tohosnet/NLog,mikkelxn/NLog,NLog/NLog,rajeshgande/NLog,pwelter34/NLog,ajayanandgit/NLog,bhaeussermann/NLog,AndreGleichner/NLog,czema/NLog,bryjamus/NLog,AqlaSolutions/NLog-Unity3D,FeodorFitsner/NLog,czema/NLog,ArsenShnurkov/NLog,ilya-g/NLog,thomkinson/NLog,UgurAldanmaz/NLog,vladikk/NLog,matteobruni/NLog,bjornbouetsmith/NLog,FeodorFitsner/NLog,sean-gilliam/NLog,vbfox/NLog,mikkelxn/NLog,vbfox/NLog,vladikk/NLog,zbrad/NLog,UgurAldanmaz/NLog,pwelter34/NLog,tmusico/NLog,matteobruni/NLog,czema/NLog,fringebits/NLog,luigiberrettini/NLog,thomkinson/NLog,ajayanandgit/NLog,hubo0831/NLog,AqlaSolutions/NLog-Unity3D,rajk987/NLog,bryjamus/NLog,RichiCoder1/NLog,MoaidHathot/NLog,ie-zero/NLog,fringebits/NLog,nazim9214/NLog,hubo0831/NLog,breyed/NLog,thomkinson/NLog,tetrodoxin/NLog,nazim9214/NLog,breyed/NLog,BrandonLegault/NLog,ArsenShnurkov/NLog,zbrad/NLog,mikkelxn/NLog,fringebits/NLog,BrandonLegault/NLog,fringebits/NLog,bjornbouetsmith/NLog,rajk987/NLog,Niklas-Peter/NLog,littlesmilelove/NLog,michaeljbaird/NLog,kevindaub/NLog,luigiberrettini/NLog,kevindaub/NLog,ilya-g/NLog,snakefoot/NLog,vladikk/NLog,304NotModified/NLog,czema/NLog,BrutalCode/NLog,babymechanic/NLog,campbeb/NLog,AndreGleichner/NLog,babymechanic/NLog,tmusico/NLog,bhaeussermann/NLog,RRUZ/NLog,rajk987/NLog,tohosnet/NLog,rajeshgande/NLog,MoaidHathot/NLog,mikkelxn/NLog,BrandonLegault/NLog,vladikk/NLog,AqlaSolutions/NLog-Unity3D,MartinTherriault/NLog