10880 posix_memalign() should avoid clobbering return parameter on failure

*** 98,107 ****
--- 98,109 ----
  file path=opt/libc-tests/tests/newlocale_test.$(ARCH) mode=0555
  file path=opt/libc-tests/tests/newlocale_test.$(ARCH64) mode=0555
  file path=opt/libc-tests/tests/nl_langinfo_test mode=0555
  file path=opt/libc-tests/tests/nl_langinfo_test.$(ARCH) mode=0555
  file path=opt/libc-tests/tests/nl_langinfo_test.$(ARCH64) mode=0555
+ file path=opt/libc-tests/tests/posix_memalign.32 mode=0555
+ file path=opt/libc-tests/tests/posix_memalign.64 mode=0555
  file path=opt/libc-tests/tests/printf-6961.64 mode=0555
  file path=opt/libc-tests/tests/printf-9511.32 mode=0555
  file path=opt/libc-tests/tests/printf-9511.64 mode=0555
  file path=opt/libc-tests/tests/priv_gettext mode=0555
  file path=opt/libc-tests/tests/psignal mode=0555