Fix bug in decompilation of single fields.

ICSharpCode.Decompiler/TypeSystem/MetadataAssembly.cs

@@ -460,7 +460,7 @@ namespace ICSharpCode.Decompiler.TypeSystem
 		/// <remarks>
 		/// * Types are resolved to their definition, as IType does not implement ISymbol.
 		///    * types without definition will resolve to <c>null</c>
-		///    * use ResolveType() properly resolve types
+		///    * use ResolveType() to properly resolve types
 		/// * When resolving methods, varargs signatures are not expanded.
 		///    * use ResolveMethod() instead to get an IMethod instance suitable for call-sites
 		/// * May return specialized members, where generics are involved.

ILSpy/Languages/CSharpLanguage.cs

@@ -215,7 +215,7 @@ namespace ICSharpCode.ILSpy
 				WriteCode(output, options.DecompilerSettings, decompiler.Decompile(field.MetadataToken), decompiler.TypeSystem);
 			} else {
 				var members = CollectFieldsAndCtors(field.DeclaringTypeDefinition, field.IsStatic);
-				decompiler.AstTransforms.Add(new SelectFieldTransform(field));
+				decompiler.AstTransforms.Add(new SelectFieldTransform(decompiler.TypeSystem.ResolveAsField(field.MetadataToken)));
 				WriteCode(output, options.DecompilerSettings, decompiler.Decompile(members), decompiler.TypeSystem);
 			}
 		}