Codacy compatibility (#575)

Refactor and split iostunnel with cmake changes, code cleanup

client/platforms/ios/LogRecord.swift

@@ -6,41 +6,41 @@ extension Log {
     let date: Date
     let level: Level
     let message: String
-    
+
     init?(_ str: String) {
       let dateStr = String(str.prefix(19))
       guard let date = Log.dateFormatter.date(from: dateStr) else { return nil }
-      
+
       let str = str.dropFirst(20)
-      
+
       guard let endIndex = str.firstIndex(of: " ") else { return nil }
       let levelStr = String(str[str.startIndex..<endIndex])
       guard let level = Level(rawValue: levelStr) else { return nil }
-      
+
       let messageStartIndex = str.index(after: endIndex)
       let message = String(str[messageStartIndex..<str.endIndex])
-      
+
       self.init(date: date, level: level, message: message)
     }
-    
+
     init(date: Date, level: Level, message: String) {
       self.date = date
       self.level = level
       self.message = message
     }
-    
+
     func save(at url: URL) {
       guard let data = "\n\(description)".data(using: .utf8) else { return }
-              
+
       if !FileManager.default.fileExists(atPath: url.path) {
-        guard let _ = try? "".data(using: .utf8)?.write(to: url) else { return }
+        guard (try? "".data(using: .utf8)?.write(to: url)) != nil else { return }
       }
-      
+
       guard let fileHandle = try? FileHandle(forUpdating: url) else { return }
-      
+
       defer { fileHandle.closeFile() }
-      
-      guard let _ = try? fileHandle.seekToEnd() else { return }
+
+      guard (try? fileHandle.seekToEnd()) != nil else { return }
       try? fileHandle.write(contentsOf: data)
     }
   }
@@ -61,7 +61,7 @@ extension Log.Record {
     case fatal
     case info
     case system // critical
-    
+
     init(from osLogType: OSLogType) {
       switch osLogType {
       case OSLogType.default: