On Apple use GetLibraryFilename() to set libfile
On Apple use GetLibraryFilename() to set libfile

Solves problem when injecting renderdoc into a process from an executable which is not renderdoccmd or qrenderdoc

Zorro666/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,Zorro666/renderdoc,baldurk/renderdoc,Zorro666/renderdoc,baldurk/renderdoc