package/ltp-testsuite: update musl related cleanup

Compile getdents0{1,2}.c which has been fixed in upstream in commit
8a85a2d61 ("getdents: update to the new api, don't mix libc and kernel
types").

Fixes: 84968aa495 ("package/ltp-testsuite: bump version to 20210121")

Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
1 file changed