filesystem: return the constructed object
filesystem: return the constructed object

This really should get identified properly by the compiler to convert to
a NVRO, but compress the code anyways.  This makes the implementation
identical to directory_iterator.cpp

git-svn-id: 756ef344af921d95d562d9e9f9389127a89a6314@294270 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx,llvm-mirror/libcxx