:recycle: running more computed obj checks

vue-theme/src/pages/single.vue

@@ -91,10 +91,10 @@ export default {
             if (!this.singlePost.galleries) return
             const galleries = []
             this.singlePost.galleries.forEach(gallery => {
-                const withImages = []
-                gallery.ids.forEach(imageId => {
-                    withImages.push(this.singlePost.attached[imageId])
-                })
+                if (!gallery.ids) return
+                const withImages = gallery.ids.map(
+                    imageId => this.singlePost.attached[imageId],
+                )
                 galleries.push(withImages)
             })
             return galleries