message: [OpenMP] Fix build of stubs library, NFC.
  Both Clang and GCC complained that they cannot initialize a return
  object of type 'kmp_proc_bind_t' with an 'int'. While at it, also
  fix a warning about missing parentheses thrown by Clang.
diff: @@ -164,7 +164,7 @@ void *kmp_aligned_malloc(size_t sz, size_t a) {
  #if KMP_OS_WINDOWS
  res = _aligned_malloc(sz, a);
  #else
  - if (err = posix_memalign(&res, a, sz)) {
  + if ((err = posix_memalign(&res, a, sz))) {
  errno = err; // can be EINVAL or ENOMEM
  res = NULL;
  }
  @@ -277,7 +277,7 @@ void __kmps_get_schedule(kmp_sched_t *kind, int *modifier) {
  kmp_proc_bind_t __kmps_get_proc_bind(void) {
  i;
  - return 0;
  + return proc_bind_false;
  } // __kmps_get_proc_bind
  double __kmps_get_wtime(void) {
  