replaced options.baseURI with doc.baseURI

lib/single-file/html-images-minifier.js

@@ -31,7 +31,7 @@ this.imagesMinifier = this.imagesMinifier || (() => {
 			let duplicates = new Set();
 			const duplicateURLs = [];
 			imageGroups.forEach((elements, src) => {
-				if (elements.length > 1 && src && src != options.baseURI) {
+				if (elements.length > 1 && src && src != doc.baseURI) {
 					elements.forEach(element => duplicates.add(element));
 					duplicateURLs.push(src);
 				}