8296654: [macos] Crash when launching JavaFX app with JDK that target…

…s SDK 13

Reviewed-by: aghaisas, jvos, mstrauss

modules/javafx.graphics/src/main/native-glass/mac/GlassViewDelegate.m

@@ -263,7 +263,9 @@ - (void)setFrameSize:(NSSize)newSize
     (*env)->CallVoidMethod(env, self->jView, jViewNotifyResize, (int)newSize.width, (int)newSize.height);
     GLASS_CHECK_EXCEPTION(env);
 
-    [self->nsView removeTrackingRect:self->trackingRect];
+    if (self->trackingRect) {
+        [self->nsView removeTrackingRect:self->trackingRect];
+    }
     self->trackingRect = [self->nsView addTrackingRect:[self->nsView bounds] owner:self->nsView userData:nil assumeInside:NO];
 }
 
@@ -277,13 +279,17 @@ - (void)setFrame:(NSRect)frameRect
     (*env)->CallVoidMethod(env, self->jView, jViewNotifyResize, (int)frameRect.size.width, (int)frameRect.size.height);
     GLASS_CHECK_EXCEPTION(env);
 
-    [self->nsView removeTrackingRect:self->trackingRect];
+    if (self->trackingRect) {
+        [self->nsView removeTrackingRect:self->trackingRect];
+    }
     self->trackingRect = [self->nsView addTrackingRect:[self->nsView bounds] owner:self->nsView userData:nil assumeInside:NO];
 }
 
 - (void)updateTrackingAreas
 {
-    [self->nsView removeTrackingRect:self->trackingRect];
+    if (self->trackingRect) {
+        [self->nsView removeTrackingRect:self->trackingRect];
+    }
     self->trackingRect = [self->nsView addTrackingRect:[self->nsView bounds] owner:self->nsView userData:nil assumeInside:NO];
 }