Does anyone know of a case where a court of appeals has said it was unnecessary for an attorney to object on an issue of settled law?

Something on the lines of "a handgun is a firearm."

You may be thing of the "right not recognized" cases. Jackson v. State, 989 S.W.2d 842, 844-45
(Tex.App.-Texarkana,1999) (discussing Black v. State, 816 S.W.2d 350 (Tex. Crim. App. 1991)). See also Selvage v. Collins, 816 S.W.2d 390, 391-92 (Tex. Crim. App. 1991).

That is what I was looking for, thanks.