Fix a regression introduced by r131955 which broke #include_next in subtle situations
because the Angled directories and the System directories were not being uniqued 
together, breaking #include_next.  I'll see about a testcase, but it will be insane.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@133212 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed