- make sure that warping textures never create a warped true color image.

This replaces the old redirection hackery that had to work differently for the legacy render path.
Overriding CopyTrueColorTranslated is far more robust and ensures that no edge cases can reach the GetPixels function, which wasn't the case before.

src/textures/texture.cpp

@@ -888,7 +888,7 @@ bool FTexture::UseBasePalette()
 	return true; 
 }
 
-FTexture *FTexture::GetRedirect(bool wantwarped)
+FTexture *FTexture::GetRedirect()
 {
 	return this;
 }