cosmetic

Author: lbargaoanu

src/AutoMapper/Configuration/MapperConfiguration.cs

@@ -210,7 +210,8 @@ static Expression CheckNullValueType(Expression expression, Type runtimeType) =>
             LambdaExpression GenerateObjectMapperExpression(in MapRequest mapRequest, IObjectMapper mapper)
             {
                 var source = Parameter(mapRequest.RequestedTypes.SourceType, "source");
-                var destination = Parameter(mapRequest.RequestedTypes.DestinationType, "mapperDestination");
+                var destinationType = mapRequest.RequestedTypes.DestinationType;
+                var destination = Parameter(destinationType, "mapperDestination");
                 var runtimeDestinationType = mapRequest.RuntimeTypes.DestinationType;
                 Expression fullExpression;
                 bool nullCheck;
@@ -230,8 +231,7 @@ LambdaExpression GenerateObjectMapperExpression(in MapRequest mapRequest, IObjec
                     var map = mapper.MapExpression(this, Configuration, mapRequest.MemberMap, mapperSource, ToType(checkNullValueTypeDest, runtimeDestinationType));
                     nullCheck = map != mapperSource;
                     var newException = Call(MappingError, ExceptionParameter, Constant(mapRequest));
-                    var throwExpression = Throw(newException, destination.Type);
-                    fullExpression = TryCatch(ToType(map, destination.Type), Catch(ExceptionParameter, throwExpression));
+                    fullExpression = TryCatch(ToType(map, destinationType), Catch(ExceptionParameter, Throw(newException, destinationType)));
                 }
                 if (nullCheck)
                 {