One more tiny error refactor

js/api.js

@@ -111,17 +111,11 @@ window.textsecure.api = function() {
 		});
 	};
 
-	self.requestVerificationCode = function(number, success_callback, error_callback) {
+	self.requestVerificationCode = function(number) {
 		doAjax({
 			call				: 'accounts',
 			httpType			: 'GET',
 			urlParameters		: '/sms/code/' + number,
-		}).then(function(response) {
-			if (success_callback !== undefined)
-				success_callback(response);
-		}).catch(function(code) {
-			if (error_callback !== undefined)
-				error_callback(code);
 		});
 	};
 

js/options.js

@@ -59,12 +59,13 @@ $('#init-go-single-client').click(function() {
 
 	single_device = true;
 
-	textsecure.api.requestVerificationCode(number,
-		function(response) { },
-		function(code) {
-			alert("Failed to send key?" + code); //TODO
-		}
-	);
+	textsecure.api.requestVerificationCode(number).catch(function(error) {
+		//TODO: No alerts
+		if (error.humanReadable)
+			alert(error.humanReadable);
+		else
+			alert(error); // XXX
+	});
 });
 
 $('#init-go').click(function() {