fixed regression pass #2

lib/single-file/single-file-core.js

@@ -153,15 +153,16 @@ this.singlefile.lib.core = this.singlefile.lib.core || (() => {
 
 	class Runner {
 		constructor(options, root) {
+			const rootDocDefined = root && this.options.doc;
 			this.root = root;
 			this.options = options;
-			this.options.url = this.options.url || (this.options.doc && this.options.doc.location.href);
-			this.options.baseURI = this.options.doc && this.options.doc.baseURI;
+			this.options.url = this.options.url || (rootDocDefined && this.options.doc.location.href);
+			this.options.baseURI = rootDocDefined && this.options.doc.baseURI;
 			this.options.rootDocument = root;
 			this.options.updatedResources = this.options.updatedResources || {};
 			this.batchRequest = new BatchRequest();
 			this.processor = new Processor(options, this.batchRequest);
-			if (root && this.options.doc) {
+			if (rootDocDefined) {
 				const docData = util.preProcessDoc(this.options.doc, this.options.win, this.options);
 				this.options.canvases = docData.canvases;
 				this.options.fonts = docData.fonts;
@@ -177,7 +178,7 @@ this.singlefile.lib.core = this.singlefile.lib.core || (() => {
 			if (this.options.saveRawPage) {
 				this.options.removeFrames = true;
 			}
-			this.options.content = this.options.content || (root && this.options.doc ? util.serialize(this.options.doc) : null);
+			this.options.content = this.options.content || (rootDocDefined ? util.serialize(this.options.doc) : null);
 			this.onprogress = options.onprogress || (() => { });
 		}