pass hash when sending "downloads.end" event

Former-commit-id: 3a781fde33222b44abbc3ec52c663e8529e07bb6

extension/core/content/content-download.js

@@ -69,7 +69,7 @@ this.singlefile.extension.core.content.download = this.singlefile.extension.core
 			}
 			browser.runtime.sendMessage({ method: "ui.processEnd" });
 		}
-		await browser.runtime.sendMessage({ method: "downloads.end", taskId: options.taskId });
+		await browser.runtime.sendMessage({ method: "downloads.end", taskId: options.taskId, hash: pageData.hash });
 	}
 
 	function downloadPageForeground(pageData) {