[babl] babl: make babl_model_get_flags also accept format

[Øyvind "pippin" Kolås <ok src gnome org>]

commit f209577b9b493c13be0b862e91b85cf7f655e495
Author: Øyvind Kolås <pippin gimp org>
Date:   Sun Dec 2 23:47:14 2018 +0100

    babl: make babl_model_get_flags also accept format
    
    perhaps it should be renamed to babl_get_model_flags since it
    now operates more generically on babl pointers, it could also
    work on bablimage.

 babl/babl-model.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/babl/babl-model.c b/babl/babl-model.c
index 0eae215..768d451 100644
--- a/babl/babl-model.c
+++ b/babl/babl-model.c
@@ -463,9 +463,16 @@ babl_model_with_space (const char *name, const Babl *space)
   return babl_remodel_with_space (babl_model (name), space);
 }
 
-BablModelFlag babl_model_get_flags (const Babl *model)
+BablModelFlag babl_model_get_flags (const Babl *babl)
 {
-  if (!model) return 0;
-  return model->model.flags;
+  if (!babl) return 0;
+  switch (babl->class_type)
+  {
+    case BABL_MODEL:
+      return babl->model.flags;
+    case BABL_FORMAT:
+      return babl->format.model->flags;
+  }
+  return 0;
 }