Fix iOS build

Limelight/ViewControllers/MainFrameViewController.m

@@ -504,7 +504,7 @@ static NSMutableSet* hostList;
     
     _streamConfig.height = [streamSettings.height intValue];
     _streamConfig.width = [streamSettings.width intValue];
-#ifdef TARGET_OS_TV
+#if TARGET_OS_TV
     // Don't allow streaming 4K on the Apple TV HD
     struct utsname systemInfo;
     uname(&systemInfo);

Limelight/ViewControllers/StreamFrameViewController.m

@@ -35,7 +35,7 @@
 #endif
 }
 
-#ifdef TARGET_OS_TV
+#if TARGET_OS_TV
 - (void)controllerPauseButtonPressed:(id)sender { }
 - (void)controllerPauseButtonDoublePressed:(id)sender {
     Log(LOG_I, @"Menu double-pressed -- backing out of stream");
@@ -125,7 +125,7 @@
 - (void)updateOverlayText:(NSString*)text {
     if (_overlayView == nil) {
         _overlayView = [[UITextView alloc] init];
-#ifndef TARGET_OS_TV
+#if !TARGET_OS_TV
         [_overlayView setEditable:NO];
 #endif
         [_overlayView setUserInteractionEnabled:NO];