- Fix deprecation warnings

Author: denischilik

mParticle-Apple-SDK-Swift/Sources/Utils/MPDevice.swift

@@ -110,12 +110,19 @@ public class MPDevice: NSObject, NSCopying {
         get {
             if let arch = _architecture {
                 return arch
-            } else {
-                guard let archRaw = NXGetLocalArchInfo().pointee.name else {
-                    return "unknown"
+            }
+
+            var systemInfo = utsname()
+            uname(&systemInfo)
+
+            let arch = withUnsafePointer(to: &systemInfo.machine) {
+                $0.withMemoryRebound(to: CChar.self, capacity: 1) {
+                    String(cString: $0)
                 }
-                return String(cString: archRaw)
             }
+
+            _architecture = arch
+            return arch
         }
         set {
             _architecture = newValue
@@ -127,7 +134,7 @@ public class MPDevice: NSObject, NSCopying {
     }
 
     @objc public var country: String? {
-        return Locale.current.regionCode
+        return Locale.current.region?.identifier
     }
 
     private var _deviceIdentifier: String?