[compiler-rt] [sanitizer] Fix race condition in GetNamedMappingFd with decorate_pro… (PR #190617)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- compiler-rt/lib/sanitizer_common/sanitizer_posix.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_posix.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_posix.cpp
index 6c9adaff8..04606afb6 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_posix.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_posix.cpp
@@ -375,13 +375,13 @@ int GetNamedMappingFd(const char *name, uptr size, int *flags) {
     internal_close(fd);
     return -1;
   }
-#if !defined(O_CLOEXEC)
+#    if !defined(O_CLOEXEC)
   res = fcntl(fd, F_SETFD, FD_CLOEXEC);
   if (res == -1) {
     internal_close(fd);
     return -1;
   }
-#endif
+#    endif
   res = internal_unlink(shmname);
   if (res == -1) {
     internal_close(fd);

``````````

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https://github.com/llvm/llvm-project/pull/190617