fix(MessageEmbed): prevent possible destructuring error

src/structures/MessageEmbed.js

@@ -411,7 +411,13 @@ class MessageEmbed {
    * @returns {EmbedField[]}
    */
   static normalizeFields(...fields) {
-    return fields.flat(2).map(({ name, value, inline }) => this.normalizeField(name, value, inline));
+    return fields.flat(2).map(field =>
+      this.normalizeField(
+        field && field.name,
+        field && field.value,
+        field && typeof field.inline === 'boolean' ? field.inline : false,
+      ),
+    );
   }
 }