Fix T45920: Loopcut w/ shrinkwrap crash

source/blender/editors/mesh/editmesh_loopcut.c

@@ -430,8 +430,9 @@ static void ringsel_finish(bContext *C, wmOperator *op)
 			                   cuts, seltype, SUBD_CORNER_PATH, 0, true,
 			                   use_only_quads, 0);
 
-			/* when used in a macro tessface is already re-recalculated */
-			EDBM_update_generic(em, (is_macro == false), true);
+			/* when used in a macro the tessfaces will be recalculated anyway,
+			 * this is needed here because modifiers depend on updated tessellation, see T45920 */
+			EDBM_update_generic(em, true, true);
 
 			if (is_single) {
 				/* de-select endpoints */