Re-disable the sanitizer_common/TestCases/Posix/getfsent.cc test. Recent macOS versions don't have the /etc/fstab file any more so we cannot test getfsent/setfsent APIs on Darwin.
// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck %s
//
-// UNSUPPORTED: linux, solaris
+// UNSUPPORTED: linux, darwin, solaris
#include <assert.h>
#include <errno.h>
