More formatting nits and cyclomatic complexity fixes

Signed-off-by: Eric Kuck <eric@bluelinelabs.com>

WireGuard/WireGuard/ZipArchive/ZipArchive.swift

@@ -8,7 +8,7 @@ enum ZipArchiveError: WireGuardAppError {
     case cantOpenOutputZipFileForWriting
     case badArchive
 
-    func alertText() -> (String, String)? {
+    func alertText() -> AlertText {
         switch self {
         case .cantOpenInputZipFile:
             return ("Unable to read zip archive", "The zip archive could not be read.")
@@ -41,7 +41,7 @@ class ZipArchive {
 
     static func unarchive(url: URL, requiredFileExtensions: [String]) throws -> [(fileBaseName: String, contents: Data)] {
 
-        var results: [(fileBaseName: String, contents: Data)] = []
+        var results = [(fileBaseName: String, contents: Data)]()
 
         guard let zipFile = unzOpen64(url.path) else {
             throw ZipArchiveError.cantOpenInputZipFile

WireGuard/WireGuard/ZipArchive/ZipExporter.swift

@@ -6,7 +6,7 @@ import UIKit
 enum ZipExporterError: WireGuardAppError {
     case noTunnelsToExport
 
-    func alertText() -> (String, String)? {
+    func alertText() -> AlertText {
         switch self {
         case .noTunnelsToExport:
             return ("Nothing to export", "There are no tunnels to export")
@@ -15,8 +15,7 @@ enum ZipExporterError: WireGuardAppError {
 }
 
 class ZipExporter {
-    static func exportConfigFiles(tunnelConfigurations: [TunnelConfiguration], to url: URL,
-                                  completion: @escaping (WireGuardAppError?) -> Void) {
+    static func exportConfigFiles(tunnelConfigurations: [TunnelConfiguration], to url: URL, completion: @escaping (WireGuardAppError?) -> Void) {
 
         guard !tunnelConfigurations.isEmpty else {
             completion(ZipExporterError.noTunnelsToExport)

WireGuard/WireGuard/ZipArchive/ZipImporter.swift

@@ -6,7 +6,7 @@ import UIKit
 enum ZipImporterError: WireGuardAppError {
     case noTunnelsInZipArchive
 
-    func alertText() -> (String, String)? {
+    func alertText() -> AlertText {
         switch self {
         case .noTunnelsInZipArchive:
             return ("No tunnels in zip archive", "No .conf tunnel files were found inside the zip archive.")