dirent: fix filespec_from_dir_path
dirent: fix filespec_from_dir_path

If the path does not begin with a separator, do not advance
skip the first character in the component referred to by 'comp'.

Change-Id: Ide184ba2065bd8b2075be27b8e1f4cae11026fdd

madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal