fix endless recursion in wmo reflection

wmo/reflection_test.go

@@ -113,19 +113,25 @@ func TestReflectionGetTokenValueAsMongoType(t *testing.T) {
 
 	type IDType string
 
+	type RecurseiveType struct {
+		Other int             `bson:"other"`
+		Inner *RecurseiveType `bson:"inner"`
+	}
+
 	type TestData struct {
 		ID    IDType    `bson:"_id"`
 		CDate time.Time `bson:"cdate"`
 		Sub   struct {
 			A string `bson:"a"`
 		} `bson:"sub"`
-		SubPtr struct {
+		SubPtr *struct {
 			A string `bson:"a"`
 		} `bson:"subPtr"`
 		Str   string                  `bson:"str"`
 		Ptr   *int                    `bson:"ptr"`
 		Num   int                     `bson:"num"`
 		MDate rfctime.RFC3339NanoTime `bson:"mdate"`
+		Rec   RecurseiveType          `bson:"rec"`
 	}
 
 	coll := W[TestData](&mongo.Collection{})
@@ -149,6 +155,7 @@ func TestReflectionGetTokenValueAsMongoType(t *testing.T) {
 	tst.AssertEqual(t, gtvasmt("hello", "str").(string), "hello")
 	tst.AssertEqual(t, gtvasmt("hello", "sub.a").(string), "hello")
 	tst.AssertEqual(t, gtvasmt("hello", "subPtr.a").(string), "hello")
+	tst.AssertEqual(t, gtvasmt("4", "rec.other").(int), 4)
 	tst.AssertEqual(t, gtvasmt("4", "num").(int), 4)
 	tst.AssertEqual(t, gtvasmt("asdf", "_id").(IDType), "asdf")
 	tst.AssertEqual(t, gtvasmt("", "ptr").(*int), nil)