renderer/native: fix missing GPU copy egl ext error
If the extension is missing, the GPU copy path would not work. The code sets the error, but forgets to return a failure. Fix this.
Found by reading code.
Compile-tested only.
If the extension is missing, the GPU copy path would not work. The code sets the error, but forgets to return a failure. Fix this.
Found by reading code.
Compile-tested only.