Allow building with clang after aec9d726
Clang also supports the malloc attribute but unlike GCC does not accept the deallocator argument. This has been reported as https://github.com/llvm/llvm-project/issues/51607
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Clang also supports the malloc attribute but unlike GCC does not accept the deallocator argument. This has been reported as https://github.com/llvm/llvm-project/issues/51607