browser.windows.onRemoved not available on Fenix

Fix #654

lib/persistentRndStorage.js

@@ -89,15 +89,6 @@
 		};
 	}();
 	
-	browser.windows.onRemoved.addListener(async function(){
-		const windows = await browser.windows.getAll();
-		if (windows.every(function(window){
-			return !window.incognito;
-		})){
-			clearIncognito();
-		}
-	});
-	
 	function registerTimeout(){
 		const interval = getInterval();
 		if (interval > 0){
@@ -173,4 +164,18 @@
 	scope.setDomainData = setDomainData;
 	scope.clearDomainData = clearDomainData;
 	scope.clearContainerData = clearContainerData;
+	
+	try {
+		browser.windows.onRemoved.addListener(async function(){
+			const windows = await browser.windows.getAll();
+			if (windows.every(function(window){
+				return !window.incognito;
+			})){
+				clearIncognito();
+			}
+		});
+	}
+	catch (error){
+		logging.error("Unable to register windows.onRemoved listener", error);
+	}
 }());

releaseNotes.txt

@@ -7,6 +7,7 @@ Version 1.10:
 	
 	fixes:
 		- always protect about:blank
+		- persistent rng not working in Firefox for Android
 	
 	known issues:
 		- if a data URL is blocked the page action button does not appear