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[ASan] Limits the conditions of the deadlock patch
PR llvm#131756 introduced a patch to fix a deadlock between LSan and ASan.
The relevant deadlock only occurs when LSan is enabled and
`dl_iterate_phdr` is used for Stop-the-World, i.e., under the condition
`CAN_SANITIZE_LEAKS && (SANITIZER_LINUX || SANITIZER_NETBSD)`.
Therefore, this commit also sets the effective condition of this patch
to the above conditions, avoiding unnecessary problems in other
environments.
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