diff --git a/vendor/github.com/json-iterator/go/reflect.go b/vendor/github.com/json-iterator/go/reflect.go
index 4459e20..39acb32 100644
--- a/vendor/github.com/json-iterator/go/reflect.go
+++ b/vendor/github.com/json-iterator/go/reflect.go
@@ -60,11 +60,12 @@
 
 // ReadVal copy the underlying JSON into go interface, same as json.Unmarshal
 func (iter *Iterator) ReadVal(obj interface{}) {
+	depth := iter.depth
 	cacheKey := reflect2.RTypeOf(obj)
 	decoder := iter.cfg.getDecoderFromCache(cacheKey)
 	if decoder == nil {
 		typ := reflect2.TypeOf(obj)
-		if typ.Kind() != reflect.Ptr {
+		if typ == nil || typ.Kind() != reflect.Ptr {
 			iter.ReportError("ReadVal", "can only unmarshal into pointer")
 			return
 		}
@@ -76,6 +77,10 @@
 		return
 	}
 	decoder.Decode(ptr, iter)
+	if iter.depth != depth {
+		iter.ReportError("ReadVal", "unexpected mismatched nesting")
+		return
+	}
 }
 
 // WriteVal copy the go interface into underlying JSON, same as json.Marshal