Fix broken weight painting colorband in default preferences.

source/blender/blenloader/intern/versioning_defaults.c

@@ -44,6 +44,7 @@
 
 #include "BKE_appdir.h"
 #include "BKE_brush.h"
+#include "BKE_colorband.h"
 #include "BKE_colortools.h"
 #include "BKE_idprop.h"
 #include "BKE_keyconfig.h"
@@ -103,6 +104,9 @@ void BLO_update_defaults_userpref_blend(void)
 	/* Auto perspective. */
 	U.uiflag |= USER_AUTOPERSP;
 
+	/* Init weight paint range. */
+	BKE_colorband_init(&U.coba_weight, true);
+
 	/* Default to left click select. */
 	BKE_keyconfig_pref_set_select_mouse(&U, 0, true);
 }