removed unneeded test

lib/single-file/single-file-browser.js

@@ -94,7 +94,7 @@ this.SingleFileBrowser = this.SingleFileBrowser || (() => {
 				resourceURL = resourceContent.url;
 			}
 		} catch (error) {
-			return { data: options && options.asDataURI ? "data:base64," : "", resourceURL };
+			return { data: options.asDataURI ? "data:base64," : "", resourceURL };
 		}
 		let contentType = resourceContent.headers && resourceContent.headers.get("content-type");
 		let charset;
@@ -115,7 +115,7 @@ this.SingleFileBrowser = this.SingleFileBrowser || (() => {
 		if (!charset && options.charset) {
 			charset = options.charset;
 		}
-		if (options && options.asDataURI) {
+		if (options.asDataURI) {
 			try {
 				if (DEBUG) {
 					log("  // ENDED   download url =", resourceURL, "delay =", Date.now() - startTime);