Merging r-196058:
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r196058 | marshall | 2013-12-01 19:24:33 -0800 (Sun, 01 Dec 2013) | 1 line

Fix for PRPR17934; based on a fix suggested by Peter Sommerlad
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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/branches/release_34@197013 91177308-0d34-0410-b5e6-96231b3b80d8