[llvm-readobj] Fix 'Teach readobj to dump .res files', pt 2.

Another fix-up for r313790. Big-endian hosts swapped byte order in
UTF16 words.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313833 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed