Fix T60781: DOF Distance (pick) crashes

From own recent changes c8e75c2b00cfb7e8

1 files changed, 4 insertions, 2 deletions

diff --git a/source/blender/editors/interface/interface_eyedropper_depth.c b/source/blender/editors/interface/interface_eyedropper_depth.c
index 1634e7c6bd4..68a93229eb5 100644
--- a/source/blender/editors/interface/interface_eyedropper_depth.c
+++ b/source/blender/editors/interface/interface_eyedropper_depth.c
@@ -111,9 +111,13 @@ static int depthdropper_init(bContext *C, wmOperator *op)
 			if (v3d->camera && v3d->camera->data && !ID_IS_LINKED(v3d->camera->data)) {
 				RNA_id_pointer_create(v3d->camera->data, &ddr->ptr);
 				ddr->prop = RNA_struct_find_property(&ddr->ptr, "dof_distance");
+				ddr->is_undo = true;
 			}
 		}
 	}
+	else {
+		ddr->is_undo = UI_but_flag_is_set(but, UI_BUT_UNDO);
+	}
 
 	if ((ddr->ptr.data == NULL) ||
 	    (ddr->prop == NULL) ||
@@ -125,8 +129,6 @@ static int depthdropper_init(bContext *C, wmOperator *op)
 	}
 	op->customdata = ddr;
 
-	ddr->is_undo = UI_but_flag_is_set(but, UI_BUT_UNDO);
-
 	ddr->art = art;
 	ddr->draw_handle_pixel = ED_region_draw_cb_activate(art, depthdropper_draw_cb, ddr, REGION_DRAW_POST_PIXEL);
 	ddr->init_depth = RNA_property_float_get(&ddr->ptr, ddr->prop);