#1252: Do not accidentally create casts to object?.

ICSharpCode.Decompiler/CSharp/ExpressionBuilder.cs

@@ -640,10 +640,10 @@ namespace ICSharpCode.Decompiler.CSharp
 					} else {
 						targetType = compilation.FindType(inst.InputType.ToKnownTypeCode(leftUType.GetSign()));
 					}
-				}
 					if (inst.IsLifted) {
 						targetType = NullableType.Create(compilation, targetType);
 					}
+				}
 				if (targetType.Equals(left.Type)) {
 					right = right.ConvertTo(targetType, this);
 				} else {