Merge pull request #283 from Automattic/lantean/fixes-macos-build

Fixes macOS build

Author: Jorge Leandro Perez

Sources/Model/ObjC/Common/TracksDeviceInformation.m

@@ -21,8 +21,10 @@ @interface TracksDeviceInformation ()
 @property (nonatomic, assign) BOOL isReachableByWiFi;
 @property (nonatomic, assign) BOOL isReachableByWWAN;
 
+#if TARGET_OS_IPHONE
 @property (nonatomic, assign) UIDeviceOrientation lastKnownDeviceOrientation;
 @property (nonatomic, strong) NSString *lastKnownPreferredContentSizeCategory;
+#endif
 
 @end