libselinux: Fix if file_contexts not '\n' terminated

If the last line of a file_contexts file is not '\n' terminated
or if any line has additional isspace(3) characters at end, it
gave an invalid file type error.
read_spec_entries now handles these situations.

Signed-off-by: Richard Haines <richard_c_haines@btinternet.com>
1 file changed