Fix transform redo panel showing only the first custom orientation

The error was introduced in rBf470a02afaea, but the problem is in
`ED_transform_calc_orientation_from_type_ex`

source/blender/editors/transform/transform_orientations.c

@@ -572,7 +572,7 @@ short ED_transform_calc_orientation_from_type_ex(const bContext *C,
       TransformOrientation *custom_orientation = BKE_scene_transform_orientation_find(
           scene, orientation_index_custom);
       applyTransformOrientation(custom_orientation, r_mat, NULL);
-      break;
+      return V3D_ORIENT_CUSTOM + orientation_index_custom;
     }
   }