Add DNA defaults for Collection.

Referenced by issue #80164, Missing DNA Defaults ("Reset to Default Value" sets to 0)

source/blender/makesdna/DNA_collection_defaults.h

@@ -0,0 +1,37 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/** \file
+ * \ingroup DNA
+ */
+
+#pragma once
+
+/* Struct members on own line. */
+/* clang-format off */
+
+/* -------------------------------------------------------------------- */
+/** \name Collection Struct
+ * \{ */
+
+#define _DNA_DEFAULT_Collection \
+  { \
+    .color_tag = COLLECTION_COLOR_NONE, \
+  }
+
+/** \} */
+
+/* clang-format on */

source/blender/makesdna/intern/dna_defaults.c

@@ -87,6 +87,7 @@
 #include "DNA_cachefile_types.h"
 #include "DNA_camera_types.h"
 #include "DNA_cloth_types.h"
+#include "DNA_collection_types.h"
 #include "DNA_curve_types.h"
 #include "DNA_hair_types.h"
 #include "DNA_image_types.h"
@@ -113,6 +114,7 @@
 #include "DNA_brush_defaults.h"
 #include "DNA_cachefile_defaults.h"
 #include "DNA_camera_defaults.h"
+#include "DNA_collection_defaults.h"
 #include "DNA_curve_defaults.h"
 #include "DNA_hair_defaults.h"
 #include "DNA_image_defaults.h"
@@ -148,6 +150,9 @@ SDNA_DEFAULT_DECL_STRUCT(CacheFile);
 /* DNA_camera_defaults.h */
 SDNA_DEFAULT_DECL_STRUCT(Camera);
 
+/* DNA_collection_defaults.h */
+SDNA_DEFAULT_DECL_STRUCT(Collection);
+
 /* DNA_curve_defaults.h */
 SDNA_DEFAULT_DECL_STRUCT(Curve);
 
@@ -306,6 +311,9 @@ const void *DNA_default_table[SDNA_TYPE_MAX] = {
     SDNA_DEFAULT_DECL_EX(CameraDOFSettings, Camera.dof),
     SDNA_DEFAULT_DECL_EX(CameraStereoSettings, Camera.stereo),
 
+    /* DNA_collection_defaults.h */
+    SDNA_DEFAULT_DECL(Collection),
+
     /* DNA_curve_defaults.h */
     SDNA_DEFAULT_DECL(Curve),