Apply suggestions from code review

Author: Rich-Harris

.changeset/wicked-readers-knock.md

@@ -2,4 +2,4 @@
 'svelte': patch
 ---
 
-fix: ensure inline object literals are correctly serialised
+fix: treat property accesses of literals as pure

packages/svelte/src/compiler/phases/2-analyze/visitors/shared/utils.js

@@ -184,6 +184,7 @@ export function is_pure(node, context) {
 	if (node.type !== 'Identifier' && node.type !== 'MemberExpression') {
 		return false;
 	}
+
 	if (node.type === 'MemberExpression' && node.object.type === 'Literal') {
 		return true;
 	}