Doversion: reset layer collection properties when needed

This prevents crashes when a file was saved with 2.8, but a new
engine settings property was created.

In those cases any previous collection settings are wiped out. We can do
an elegant merge soon.

1 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_layer.h b/source/blender/blenkernel/BKE_layer.h
index 7021f0ea0b0..54a047d6802 100644
--- a/source/blender/blenkernel/BKE_layer.h
+++ b/source/blender/blenkernel/BKE_layer.h
@@ -222,6 +222,9 @@ void BKE_visible_bases_Iterator_end(Iterator *iter);
     }                                                                         \
 }
 
+/* temporary doversion functions */
+void BKE_scene_layer_doversion_update(struct Main *bmain);
+
 #ifdef __cplusplus
 }
 #endif