Fix onCancel signature and Int optional binding

Author: kevin-spren

Sources/SprenUI/UI/Screens/Flows/FingerCamera/ResultsScreen.swift

@@ -80,8 +80,8 @@ struct ResultsScreen: View {
             }
 
             // ANS balance
-            if let ansBalance = results.ansBalance, let intANSBalance = Int(ansBalance) {
-                ANSBalanceResult(ansBalance: intANSBalance, onInfoButtonTap: { transition(to: .ansBalanceInfo) })
+            if let ansBalance = results.ansBalance {
+                ANSBalanceResult(ansBalance: Int(ansBalance), onInfoButtonTap: { transition(to: .ansBalanceInfo) })
             }
 
             if results.readiness == nil {

Sources/SprenUI/UI/Screens/SprenUI/SprenUI+Config.swift

@@ -42,7 +42,7 @@ extension SprenUI {
             .setupGuide: "SetupGuide"
         ]
 
-        public let onCancel: (() -> Void)
+        public let onCancel: (() -> Void)?
         public let onFinish: ((_ results: Results) -> Void)
 
         // only relevant to demo app
@@ -81,7 +81,7 @@ extension SprenUI {
                     secondaryColor: Color? = nil,
                     project: SprenProject,
                     graphics: [Graphic: String]? = nil,
-                    onCancel: @escaping (() -> Void),
+                    onCancel: (() -> Void)? = nil,
                     onFinish: @escaping ((Results) -> Void),
                     logger: Logger? = nil) {
             self.baseURL = baseURL