Fixed a few errors in the browser special meta tags objects

cmd/mist/assets/qml/views/browser.qml

@@ -337,7 +337,7 @@ Rectangle {
 			Timer {
 				interval: 500; running: true; repeat: true
 				onTriggered: {
-           webview.runJavaScript("document.querySelector('meta[name=badge]').getAttribute('content')", function(badge) {
+					webview.runJavaScript("try{document.querySelector('meta[name=badge]').getAttribute('content')}catch(e){}", function(badge) {
 						if (badge) {
 							menuItem.secondaryTitle = badge;
 						}
@@ -351,11 +351,10 @@ Rectangle {
 						menuItem.title = pageTitle;	
 					});
 
+					webView.runJavaScript("try{document.querySelector(\"meta[name='ethereum-dapp-url-bar-style']\").getAttribute(\"content\")}catch(e){}", function(topBarStyle){
+						if (!topBarStyle) return;
 
-					//var topBarStyle
-					webView.runJavaScript("document.querySelector(\"meta[name='ethereum-dapp-url-bar-style']\").getAttribute(\"content\")", function(topBarStyle){
 						if (topBarStyle=="transparent") {
-
 							// Adjust for a transparent sidebar Dapp
 							navBarBackground.visible = false;
 							back.visible = false;
@@ -370,12 +369,9 @@ Rectangle {
 							appInfoPane.anchors.leftMargin = 0;
 							appInfoPaneShadow.anchors.leftMargin = 0;
 							webview.anchors.topMargin = 0;
-
 						};	
 					});
 
-					
-
 					webview.runJavaScript(eth.readFile("bignumber.min.js"));
 					webview.runJavaScript(eth.readFile("ethereum.js/dist/ethereum.js"));
 
@@ -383,7 +379,9 @@ Rectangle {
 					var matches = cleanTitle.match(/^[a-z]*\:\/\/([^\/?#]+)(?:[\/?#]|$)/i);
 					var domain = matches && matches[1];
 
+					if (domain)
 						appDomain.text = domain //webview.url.replace("a", "z")
+					if (webview.title)
 						appTitle.text = webview.title
 
 					showFullUrlBar(false);