Fix AbstractReader#readMapByType

Author: hevav

src/main/java/net/elytrium/serializer/language/reader/AbstractReader.java

@@ -267,9 +267,9 @@ private Map<Object, Object> readMapByType(Field owner, Type type) {
         } catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
           throw new SerializableReadException(e);
         }
-      } else if (Map.class.isAssignableFrom(owner.getType())) {
+      } else {
         try {
-          Constructor<?> constructor = owner.getType().getDeclaredConstructor();
+          Constructor<?> constructor = GenericUtils.unwrapClassParameterizedType(type).getDeclaredConstructor();
           constructor.setAccessible(true);
           return this.readMap(owner, (Map<Object, Object>) constructor.newInstance(), mapKeyType, mapValueType);
         } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {