[libcxx] [test] Fix whitespace, NFC.
Strip trailing whitespace and untabify. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@331576 91177308-0d34-0410-b5e6-96231b3b80d8
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Strip trailing whitespace and untabify. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@331576 91177308-0d34-0410-b5e6-96231b3b80d8