apps/glteapot: Don't lock, then issue BGLView::Resize

* BGLView has it's own locking, this isn't the correct
  behaviour as you only lock for gl* calls
* Resolves problems with window not scaling properly
  on proper llvmpipe

src/apps/glteapot/ObjectView.cpp

@@ -551,10 +551,10 @@ ObjectView::MouseMoved(BPoint point, uint32 transit, const BMessage *msg)
 void
 ObjectView::FrameResized(float width, float height)
 {
-	LockGL();
-
 	BGLView::FrameResized(width, height);
 
+	LockGL();
+
 	width = Bounds().Width();
 	height = Bounds().Height();
 	fYxRatio = height / width;