Fix: crash in transform.create_orientation on curves without a 3D view

source/blender/editors/transform/transform_orientations.cc

@@ -1220,7 +1220,7 @@ int getTransformOrientation_ex(const Scene *scene,
         }
       }
       else {
-        const bool use_handle = v3d->overlay.handle_display != CURVE_HANDLE_NONE;
+        const bool use_handle = v3d ? (v3d->overlay.handle_display != CURVE_HANDLE_NONE) : true;
 
         for (nu = static_cast<Nurb *>(nurbs->first); nu; nu = nu->next) {
           /* Only bezier has a normal. */

source/blender/editors/transform/transform_orientations.hh

@@ -76,6 +76,8 @@ enum {
 /**
  * Calculate unit length values into `r_normal` & `r_plane`
  * from selected objects in the 3D viewport.
+ *
+ * \param v3d: The 3D viewport or null.
  */
 int getTransformOrientation_ex(const Scene *scene,
                                ViewLayer *view_layer,