ILSpy should not crash if fullName contains no "/" - no version info

ICSharpCode.Decompiler/Metadata/DotNetCorePathFinder.cs

@@ -44,7 +44,14 @@ namespace ICSharpCode.Decompiler.Metadata
 			{
 				var parts = fullName.Split('/');
 				this.Name = parts[0];
-				this.Version = parts[1];
+				if (parts.Length > 1)
+				{
+					this.Version = parts[1];
+				} else
+				{
+					this.Version = "<UNKNOWN>";
+				}
+				
 				this.Type = type;
 				this.Path = path;
 				this.RuntimeComponents = runtimeComponents ?? Empty<string>.Array;