Fix T71250: ID user decrement error with ID properties in ViewLayer

Credit for the original patch goes to @scorpion81.

3 files changed, 8 insertions, 1 deletions

diff --git a/source/blender/blenkernel/BKE_idprop.h b/source/blender/blenkernel/BKE_idprop.h
index 0eb8df1b19d..94c2a94d420 100644
--- a/source/blender/blenkernel/BKE_idprop.h
+++ b/source/blender/blenkernel/BKE_idprop.h
@@ -136,6 +136,7 @@ struct IDProperty *IDP_New(const char type,
 
 void IDP_FreePropertyContent_ex(struct IDProperty *prop, const bool do_id_user);
 void IDP_FreePropertyContent(struct IDProperty *prop);
+void IDP_FreeProperty_ex(IDProperty *prop, const bool do_id_user);
 void IDP_FreeProperty(struct IDProperty *prop);
 
 void IDP_ClearProperty(IDProperty *prop);
diff --git a/source/blender/blenkernel/intern/idprop.c b/source/blender/blenkernel/intern/idprop.c
index 016da52252a..1125047be32 100644
--- a/source/blender/blenkernel/intern/idprop.c
+++ b/source/blender/blenkernel/intern/idprop.c
@@ -1085,6 +1085,12 @@ void IDP_FreePropertyContent(IDProperty *prop)
   IDP_FreePropertyContent_ex(prop, true);
 }
 
+void IDP_FreeProperty_ex(IDProperty *prop, const bool do_id_user)
+{
+  IDP_FreePropertyContent_ex(prop, do_id_user);
+  MEM_freeN(prop);
+}
+
 void IDP_FreeProperty(IDProperty *prop)
 {
   IDP_FreePropertyContent(prop);
diff --git a/source/blender/blenkernel/intern/layer.c b/source/blender/blenkernel/intern/layer.c
index f12999b033d..34c1c5ecab4 100644
--- a/source/blender/blenkernel/intern/layer.c
+++ b/source/blender/blenkernel/intern/layer.c
@@ -239,7 +239,7 @@ void BKE_view_layer_free_ex(ViewLayer *view_layer, const bool do_id_user)
   BKE_freestyle_config_free(&view_layer->freestyle_config, do_id_user);
 
   if (view_layer->id_properties) {
-    IDP_FreeProperty(view_layer->id_properties);
+    IDP_FreeProperty_ex(view_layer->id_properties, do_id_user);
   }
 
   MEM_SAFE_FREE(view_layer->object_bases_array);