Benjamin Kramer ed8f9589a8 Avoid initializing posix_spawn_file_actions_t if not used. ...

- glibc falls back to fork+exec if a file actions object is present.
- On BSDs this saves a malloc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127969 91177308-0d34-0410-b5e6-96231b3b80d8

2011-03-20 15:52:24 +00:00

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