Use the standard C `INFINITY` and `NAN` constants directly

The `Math_INF` and `Math_NAN` defines were just aliases for those
constants, so we might as well use them directly.

Some portions of the code were already using `INFINITY` directly.

1 files changed, 1 insertions, 1 deletions

diff --git a/scene/main/viewport.h b/scene/main/viewport.h
index 7b7f1c3818..32b6ba84b5 100644
--- a/scene/main/viewport.h
+++ b/scene/main/viewport.h
@@ -263,7 +263,7 @@ private:
 	Transform3D physics_last_camera_transform;
 	ObjectID physics_last_id;
 	bool physics_has_last_mousepos = false;
-	Vector2 physics_last_mousepos = Vector2(Math_INF, Math_INF);
+	Vector2 physics_last_mousepos = Vector2(INFINITY, INFINITY);
 	struct {
 		bool alt = false;
 		bool control = false;